Online Etymology Dictionary

glassful (n.): Old English glæsful "as much as a glass will hold;" see glass (n.) + -ful.
grudge (n.): "ill will excited by some special cause," late 15c., from grudge (v.).
testament (n.): late 13c., "last will disposing of property," from Latin testamentum "a last will, publication of a will," from testari "make a will, be witness to," from testis "witness," from PIE *tri-st-i- "third person standing by," from root *tris- "three" (see three) on the notion of "third person, disinterested witness."

Use in reference to the two divisions of the Bible (early 14c.) is from Late Latin vetus testamentum and novum testamentum, loan-translations of Greek palaia diatheke and kaine diatheke. Late Latin testamentum in this case was a confusion of the two meanings of Greek diatheke, which meant both "covenant, dispensation" and "will, testament," and was used in the former sense in the account of the Last Supper (see testimony) but subsequently was interpreted as Christ's "last will."
malice (n.): c. 1300, "desire to hurt another," from Old French malice "ill will, spite, sinfulness, wickedness" (12c.), from Latin malitia "badness, ill will, spite," from malus "bad" (see mal-). In legal use, "wrongful intent generally" (1540s).
malicious (adj.): early 13c., from Old French malicios "showing ill will, spiteful, wicked" (Modern French malicieux), from Latin malitiosus "wicked, malicious," from malitia "badness, ill will, spite," from malus "bad" (see mal-). In legal use (early 14c., Anglo-French), it means "characterized by malice prepense."
malevolence (n.): mid-15c., from Middle French malevolence and directly from Latin malevolentia "ill-will, dislike, hatred," from malevolentem (nominative malevolens) "malevolent" (see malevolent).
beck (n.): late 14c., "mute signal," from noun use of bekken (v.), variant of becnan "to beckon" (see beckon). Transferred sense of "slightest indication of will" is from late 15c.
nolle prosequi: formal notice to a plaintiff that the prosecutor will not continue a suit, Latin, literally "to be unwilling to pursue." The verb nolle-pross is attested from 1880.
catchphrase (n.): also catch-phrase, 1837, from catch (v.) + phrase (n.). The notion is of words that will "catch" in the mind (compare catchword).
numen (n.): "divine spirit, presiding divinity," 1620s, from Latin numen "divine will, divinity," literally "a nod," from nuere "to nod" (assent); see numinous.
probate (v.): 1560s, "to prove," from probate (n.) or from Latin probatus, past participle of probare. Specific sense of "prove the genuineness of a will" is from 1792. Related: Probated; probating.
legacy (n.): late 14c., legacie, "body of persons sent on a mission," from Medieval Latin legatia, from Latin legatus "ambassador, envoy, deputy," noun use of past participle of legare "send with a commission, appoint as deputy, appoint by a last will" (see legate).

Sense of "property left by will, a gift by will" appeared in Scottish mid-15c. Legacy-hunter is attested from 1690s. French legs "a legacy" is a bad spelling of Old French lais (see lease (n.)). French legacie is attested only from 16c.
ignis fatuus (n.): "will o' the wisp, jack-o-lantern," 1560s, Medieval Latin, literally "foolish fire;" see igneous + fatuous. "It seems to have been formerly a common phenomenon; but is now exceedingly rare" [OED].
probate (n.): "official proving of a will," c. 1400, from Latin probatum "a thing proved," neuter of probatus "tried, tested, proved," past participle of probare "to try, test, prove" (see prove).
quodlibet (n.): "a nicety, subtlety," late 14c., Latin, literally "what you will, what you please," from quod "what," neuter of qui (see who) + libet "it pleases" (see love (n.)).
numinous (adj.): "divine, spiritual," 1640s, from Latin numen (genitive numinis) "divine will," properly "divine approval expressed by nodding the head," from nuere "to nod," from PIE *neu- "to nod" (source also of Greek neuein "to nod") + -ous.
gratitude (n.): mid-15c., "good will," from Middle French gratitude (15c.) or directly from Medieval Latin gratitudinem (nominative gratitudo) "thankfulness," from Latin gratus "thankful, pleasing" (see grace (n.)). Meaning "thankfulness" is from 1560s.
post-millennial (adj.): also postmillennial, 1831, from post- "after" + millennial; chiefly in reference to the Protestant doctrine that the second coming of Christ will occur after, not at, the Christian millennium.
Ares: Greek god of war, identified by Romans with their Mars; literally "injurer, destroyer," from are "bane, ruin," perhaps cognate with Sanskrit irasya "ill-will" (see ire).
premillennial (adj.): 1829, "before the millennium," especially in theological sense of "before the Second Coming of Christ;" from pre- + millennial. Premillenarian, one who believes the second coming of Christ will precede the Millennium, is from 1842. Related: Premillenialism.
flash-point (n.): also flashpoint, "temperature at which vapor will ignite momentarily," 1869, from flash (v.) + point (n.). Figurative use by 1955. Slightly earlier as flashing-point (1867).
determinism (n.): 1846, in theology (lack of free will); 1876 in general sense of "doctrine that everything happens by a necessary causation," from French déterminisme, from German Determinismus, perhaps a back-formation from Praedeterminismus (see determine).
testator (n.): c. 1400, from Anglo-French testatour (c. 1300), from Late Latin testator "one who makes a will," from testari (see testate). Fem. form testatrix is attested from 1590s.
self-: word forming element indicating "oneself," also "automatic," from Old English use of self (pron.) in compounds, such as selfbana "suicide," selflice "self-love, pride, vanity, egotism," selfwill "free will."
warning (n.): "notice beforehand of the consequences that will probably follow continuance in some particular course" [Century Dictionary], Old English warnung, verbal noun from warnian (see warn (v.)).
lickspittle (n.): also lick-spittle, "sycophant, abject toady, one who will do any repulsive thing," 1741, from lick (v.1) + spittle. Phrase lick the spittle as a repulsive act is from 1640s.
list (n.4): c. 1200, "pleasure, enjoyment;" mid-13c., "desire, wish, will, choice," from list (v.4). Somehow English has lost listy (adj.) "pleasant, willing (to do something); ready, quick" (mid-15c.).
bequeath (v.): Old English becweðan "to say, speak to, exhort, blame," also "leave by will;" from be- + cweðan "to say," from Proto-Germanic *kwethan, from PIE *gwet- "to say, speak."

Original sense of "say, utter" died out 13c., leaving legal sense of "transfer by will." Closely related to bequest. "An old word kept alive in wills" [OED 1st ed.]. Old English bequeðere meant "interpreter, translator." Related: Bequeathed; bequeathing.
mortician (n.): 1895, American English, coined from mortuary + -ician, as in physician.
An undertaker will no longer be known as an "undertaker and embalmer." In the future he will be known as the "mortician." This was decided on at the second day's meeting of the Funeral Directors' Association of Kentucky, which was held in Louisville. ["The Medical Herald," July 1895]
y'all (pron.): by 1879, U.S. dialect abbreviation of you all (see you, and compare yins).
Children learn from the slaves some odd phrases ... as ... will you all do this? for, will one of you do this? ["Arthur Singleton" (Henry C. Knight), "Letters from the South and West," 1824]
We-all for "us" is attested by 1865; we-uns by 1864. Who-all attested from 1899.
fantods (n.): 1835, jocular formation, perhaps based on fantasy.
There is an indescribable complaint, which will never allow a moment's repose to mind or body; which nothing will satisfy--which allows of no beginning, and no ending--which wheels round the mind like the squirrel in its cage, ever moving, but still making no progress. It is called the Fantods. From the diagnostics, we pronounce Lord Brougham incurably diseased with the Fantods. ["The Metropolitan," London, October 1835]
lobbyist (n.): 1863, American English, from lobby (n.) in the political sense + -ist.
[A] strong lobbyist will permit himself to lose heavily at the poker-table, under the assumption that the great Congressman who wins the stake will look leniently upon the little appropriation he means to ask for. [George A. Townsend, "Events at the National Capital and the Campaign of 1876," Hartford, Conn., 1876]
intention (n.): late 14c., entencioun, "purpose, design, aim or object; will, wish, desire, that which is intended," from Old French entencion "intent, purpose, aspiration; will; thought" (12c.), from Latin intentionem (nominative intentio) "a stretching out, straining, exertion, effort; attention," noun of action from intendere "to turn one's attention," literally "to stretch out" (see intend). Also in Middle English "emotion, feelings; heart, mind, mental faculties, understanding."
pigeon-hole (n.): also pigeonhole, 1570s, "a small recess for pigeons to nest in," from pigeon + hole (n.). Meaning "a compartment in a writing desk," etc. is from 1680s, based on resemblance. The verb is from 1840 literally; figurative sense of "label mentally" is from 1870.
[Y]ou will have an inspector after you with note-book and ink-horn, and you will be booked and pigeon-holed for further use when wanted. ["Civilisation--The Census," "Blackwood's Magazine," Oct. 1854]
Related: Pigeonholed.
technophobe (n.): by 1952, perhaps by 1946, from techno- + -phobe.
If the reader will consult such a book as Recent Economic Changes, by David A. Wells, published in 1889, he will find passages that, except for the dates and absolute amounts involved, might have been written by our technophobes (if I may coin a needed word) of today. [Henry Hazlitt, "Economics in One Lesson," 1952 edition]
jay (adj.): "fourth-rate, worthless" (as in a jay town), 1888, American English, earlier as a noun, "hick, rube, dupe" (1884); apparently from some disparaging sense of jay (n.). Perhaps via a decaying or ironical use of jay in the old slang sense "flashy dresser." Century Dictionary (1890s) notes it as actors' slang for "an amateur or poor actor" and as an adjective a general term of contempt for audiences.
"A jay hasn't got any more principle than a Congressman. A jay will lie, a jay will steal, a jay will deceive, a jay will betray; and, four times out of five, a jay will go back on his solemnest promise. The sacredness of an obligation is a thing which you can't cram into no blue-jay's head." [Mark Twain, "Blue-Jays"]
They were said to be disliked by hunters because their cries aroused deer. Barrère and Leland's "Dictionary of Slang, Jargon & Cant" [1889] describes the noun as an American term of contempt for a person, "a sham 'swell;' a simpleton," and suspect it might be from jayhawker.
make-work: 1913 (adj.); 1937 (n.), "busy-work, activity of no value," American English, from the verbal expression to make work (see make (v.) + work (n.)).
A big fire devoured a street; "It will make work," I heard my father say; a ship was lost at sea laden with silk, and leather, and cloth; "It will make work," said my father; a reservoir broke jail, and swept the heart of the town away. "It will make work," my mother said; so all human calamities were softened blessings to me; they made "work," and work made wages, and wages made bread and potatoes, and clothes for me. ["The Radical Review," Chicago, Sept. 15, 1883]
uppercut (n.): in pugilism, a close-in strike upward with the fist, 1831, from upper + cut (n.). Perhaps the image is of chopping a tree by making cuts up (as well as down) in the trunk.
It was on a side hill, and I observed a boy, who appeared to be about fifteen years of age, opposite the house felling a large tree; he had cut a few chips from the under side, and was then making the principal incision on the upper. ... I said to the boy, "Well Sir, I see that you make the upper cut." "That is the true cut," said the boy; "for if you will take the axe and try below, you will find that the tree will crowd down upon your chips, and you can't get it down in double the time." [Theodore Sedgwick, "Hints to My Countrymen," 1826]
Jansenism (n.): 1650s, in reference to doctrine of Cornelius Jansen (1585-1638), Catholic bishop of Ypres, who maintained the perverseness and inability for good of the natural human will. The term is prominent in 17c.-18c. religious writing, often as a reproach. The surname is the Flemish equivalent of Johnson. Related: Jansenist.
underdog (n.): "the beaten dog in a fight," 1887, from under + dog (n.). Compare top dog "dominant person in a situation or hierarchy" (see top (adj.)).
I'm a poor underdog
But tonight I will bark
With the great Overdog
That romps through the dark.

[from "Canis Major," Robert Frost, 1928]
Ragnarok (n.): in Norse mythology, the last battle of the world, in which gods and men will be destroyed by monsters and darkness, 1770, from Old Norse ragna, genitive of rögn "gods" + rök "destined end" or rökr "twilight." Also see Gotterdammerung.
device (n.): late 13c., from Old French devis "division, separation, disposition, wish, desire; coat of arms, emblem; last will," from deviser "to divide, distribute" (see devise). Sense of "method by which something is divided" arose in French and led to modern meaning.
Nobel: 1900, in reference to five prizes (in physics, chemistry, medicine, literature, and peace) established in the will of Alfred Nobel (1833-1896), Swedish chemist and engineer, inventor of dynamite. A sixth prize, in economics, was added in 1969. Related: Nobelist.
equanimity (n.): c. 1600, "fairness, impartiality," from French équanimité, from Latin aequanimitatem (nominative aequanimitas) "evenness of mind, calmness; good-will, kindness," from aequanimis "mild, kind," literally "even-minded," from aequus "even, level" (see equal (adj.)) + animus "mind, spirit" (see animus). Meaning "evenness of temper" in English is from 1610s.
discord (n.): early 13c., descorde, "unfriendly feeling, ill will;" also "dissention, strife," from Old French descorde (12c.) "disagreement," from Latin discordia, from discors (genitive discordis) "disagreeing, disagreement," from dis- "apart" (see dis-) + cor (genitive cordis) "heart," from PIE root *kerd- "heart" (see heart). Musical sense is late 14c.
chiliasm (n.): c. 1600, from Latinized form of Greek khiliasmos, from khilias, from khilioi "a thousand, the number 1,000," which is of unknown origin; supposed by some to be related to Latin mille. The doctrine of the millennium, the opinion that Christ will reign in bodily presence on earth for 1,000 years. Related: Chiliast; chiliastic.
invidious (adj.): c. 1600, from Latin invidiosus "full of envy, envious" (also "exciting hatred, hateful"), from invidia "envy, grudge, jealousy, ill will" (see envy (n.)). Envious is the same word, but passed through French. Related: Invidiously; invidiousness.
hoopoe (n.): 1660s, from Latin upupa, imitative of its cry (compare Greek epops "hoopoe," Polish dudek, Russian udodu).
If anybody smears himself with the blood of this bird on his way to bed, he will have nightmares about suffocating devils. [Cambridge bestiary, 12c.]
arbitrary (adj.): early 15c., "deciding by one's own discretion," from Old French arbitraire (14c.) or directly from Latin arbitrarius "depending on the will, uncertain," from arbiter (see arbiter). The original meaning gradually descended to "capricious" and "despotic" (1640s). Related: Arbitrarily; arbitrariness.
misquote (v.): 1590s; see mis- (1) + quote (v.). First recorded in Shakespeare.
Looke how we can, or sad or merrily, Interpretation will misquote our lookes. ["I Hen. IV," v.ii.13]
Related: Misquoted; misquoting. As a noun from 1855.