Online Etymology Dictionary

muleteer (n.): "mule driver," 1530s, from Middle French muletier, from mulet "mule," a diminutive formation replacing Old French mul as the word for "mule" in French (see mule (n.1)).
penultima (n.): 1580s, from Latin penultima (syllaba), "the next to the last syllable of a word or verse," from fem. of Latin adjective penultimus "next-to-last," from paene "almost" + ultimus "final" (see ultimate).
forecast (n.): early 15c., "forethought, prudence," probably from forecast (v.). Meaning "conjectured estimate of a future course" is from 1670s. A Middle English word for weather forecasting was aeromancy.
para- (2): word-forming element meaning "defense, protection against; that which protects from," from Italian para, imperative of parare "to ward off," from Latin parare "make ready" (see pare).
terminal (n.): "end point of a railway line," 1888, from terminal (adj.); sense of "device for communicating with a computer" is first recorded 1954. Earlier "final part of a word" (1831).
onco-: word-forming element meaning "bulk, mass," especially in medical use, "tumor," from Latinized form of Greek onko-, comb. form of onkos "bulk, size, mass, body."
onto-: word-forming element meaning "a being, individual; being, existence," from Greek onto-, from stem of on (genitive ontos) "being," neuter present participle of einai "to be" (see essence).
skate (v.): 1690s, "to ice-skate," from skate (n.2). U.S. slang sense of "to get away with something" is attested from 1945. Related: Skated; skating. A modern Latinate word for an ice-skating rink is glaciarium (1876).
conscript (v.): 1813, American English, from conscript (n.). A word from the militia drafts in the War of 1812. Popularized (or unpopularized) during U.S. Civil War, when both sides resorted to it in 1862. Related: Conscripted; conscripting.
bleep (v.): 1957, from bleep (n.); specific sense of "edit a sound over a word deemed unfit for broadcast" is from 1968 (earliest reference seems to be to the "Smothers Brothers Comedy Hour" on U.S. television). Related: Bleeped; bleeping.
-idae: word-forming element used to coin family names in zoology (by being suffixed to the name of the genus whence that of the family is derived), from Latin -idae, plural of noun suffix -ides (see -id).
cerato-: word-forming element meaning "horn," from Latinized form of Greek keras (genitive keratos) "horn of an animal; horn as a substance," from PIE *ker- (1) "horn, head" (see horn (n.)).
protero-: before vowels proter-, word-forming element meaning "former, earlier," from comb. form of Greek proteros "before, former, anterior," from PIE *pro-, from root *per- (1) "forward, through" (see per).
preter-: also praeter-, word-forming element meaning "beyond," from Latin praeter (adverb and preposition) "beyond, before, above, more than," properly comparative of prae "before" (see pre-).
pycno-: before vowels pycn-, word-forming element meaning "close, thick, dense," from comb. form of Greek pyknos "thick, dense." Sometimes via German as pykno-.
quadru-: word-forming element meaning "four, having four, consisting of four," variant of quadri-, especially before -p-, from an older form of the element, which perhaps was influenced later by tri-.
reject (n.): 1550s, "a castaway" (rare), from reject (v.). Modern use probably a re-formation of the same word: "thing cast aside as unsatisfactory" (1893); "person considered low-quality and worthless" (1925, from use in militaries).
spermato-: before vowels spermat-, word-forming element meaning "seed, sperm," used from 1880s in scientific compounds, from Greek sperma (genitive spermatos "seed" of an animal or plant; see sperm).
sesqui-: word-forming element, from Latin sesqui- "one-half more," contraction of *semis-que- "a half in addition," from semis "a half" (see semi-) + -que "and," from PIE *kwe-.
sclero-: before vowels scler-, word-forming element meaning "hard," from Latinized form of Greek sklero-, comb. form of skleros "hard," related to skellein "to dry up, parch," from PIE *skle-ro-, from root *skele- "to parch, wither."
sederunt (n.): "sitting, session," Latin, literally "they sat" (typical opening word in recordings of such proceedings), third person plural past tense of sedere "to sit" (see sedentary).
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."
rachio-: also rhachio-, before vowels rachi-, word-forming element meaning "spinal," from Greek rhakhis "spine, ridge, rib of a leaf." Compare Greek rhakhos "thorn hedge."
soever (adv.): 1550s, from so + ever. "A word generally used in composition to extend or render indefinite the sense of such words as who, what, where, when, how, etc. ...." [Century Dictionary].
-plus: word-forming element, Latin -plus "-fold," from *-plo-, combining form of PIE *pel- (3) "to fold" (see fold (v.)). Cognate with Old English -feald, Greek -paltos, -plos.
splanchno-: before vowels splanchn-, word-forming element meaning "viscera," from Greek splankhnon, usually in plural, splankhna "the innards, entrails" (including heart, lungs, liver, kidneys); related to splen (see spleen).
substantive (n.): in grammatical use, late 14c., short for noun substantive, from Late Latin substantivium, neuter of substantivus "of substance or being" (see substantive (adj.)). Latin nomen substantivum was "name or word of substance."
trannie (n.): also tranny "transsexual person," 1983, from transsexual + -ie. In 1960s and '70s the word was used as a slang shortening of transistor radio and in car magazines for transmission.
-teenth: word-forming element making ordinal numbers from 13 to 19, from -teen + -th (1), displacing Old English -teoða, -teoðe (West Saxon), related to teogoða (Anglian) "tenth."
tacho-: word-forming element meaning "speed," from Latinized form of Greek takho-, comb. form of takhos "speed, swiftness, fleetness, velocity," related to takhys "swift," of unknown origin.
Tanzania: east African nation, formed 1964 by union of Tanganyika (named for the lake, the name of which is of unknown origin) and Zanzibar. With country-name word-forming element -ia. Related: Tanzanian.
feuillemorte (adj.): "of the color of a dead leaf," 1640s, fieulamort, from French feuille morte, literally "dead leaf" (see folio + mortal (adj.)). A word of loose spelling, variants include phyllamort, filemot, philomot.
verbiculture (n.): "the production of words," 1873, from Latin verbum "word" (see verb) + ending from agriculture, etc. Coined by Fitzedward Hall, in "Modern English." He was scolded for it in the "Edinburgh Review."
frieze (n.2): type of coarse woolen cloth with a nap on one side, late 14c., from Old French frise, probably ultimately from a German or Dutch word meaning "to curl" and related to frizzle.
-head: word-forming element meaning "state or condition of being," Middle English -hede, from a variant of Old English -had, the source of -hood. The only surviving words with it are maidenhead and godhead.
-el (1): instrumental word-forming element, expressing "appliance, tool," from Old English -ol, -ul, -el, representing PIE *-lo- (see -ule). In modern English usually -le except after -n-.
workday (n.): Old English weorcdæg, from work (n.) + day (n.). The modern word is perhaps a Middle English re-formation. As an adjective (c. 1500) it has generally only the literal sense (compare workaday).
wynn (n.): runic letter in Old English and early Middle English, representing "w," Old English wyn, so called for being the first letter of that word, which literally means "delight, pleasure" (see Venus).
-facient: word-forming element meaning "a doer, one who or that which does," from Latin -facientem (nominative -faciens), comb. form of present participle of facere "to make" (see factitious).
-form: word-forming element meaning "-like, -shaped, in the form of," from French -forme and directly from Latin -formis "-like, shaped," from forma "form" (see form (n.)). Properly preceded by an -i-.
eury-: word-forming element meaning "wide," from comb. form of Greek eurys "broad, wide," from PIE root *were- (1) "wide, broad" (source also of Sanskrit uruh "broad, wide").
interamnian (adj.): "between two rivers" (usually, if not exclusively, with reference to Mesopotamia), 1774, from Late Latin interamnius, from inter "between" (see inter-) + amnis "a river," a word perhaps of Celtic origin (see afanc).
in totidem verbis: Latin phrase, "in just so many words," that is, "in these very words," from demonstrative of Latin totus "whole, entire" (see total (adj.)) + ablative plural of verbum "word" (see verb).
jivey (adj.): a word popularized by, if not coined in, the song "Mairzy Doats," from jive (n.) + -y (2). As to sense, it has meant "jazzy, swinging," but also "phony, fake."
howe (n.): also how, "artificial burial mound," 1660s, from a local word in northern England for a hill or hillock, from a Middle English use of Old Norse haugr "mound; cairn," perhaps from the root of high (adj.).
hyeto-: word-forming element in science meaning "rain," from Greek hyetos "rain," from hyein "to rain," from PIE root *seue- (2) "take liquid" (see sup (v.2)).
hypogamy (n.): "marriage of a woman into a lower class, caste, or tribe," 1940, an anthropologist's word first used in an Indian context, from hypo- "under, beneath" + -gamy "marriage." Related: Hypogamous.
ism (n.): "distinctive doctrine, theory, or practice," 1670s, the suffix -ism used as an independent word, chiefly disparagingly. Related: Ismatical. By the same path, ist is from 1811.
ichthyo-: word-forming element meaning "fish," from Latinized form of Greek ikhthys "a fish" (in plural, "a fish-market"), from PIE root *dhghu- "fish" (source also of Armenian jukn, Lithuanian žuvis).
gono-: before vowels gon-, word-forming element from Greek gonos "seed, that which engenders," from PIE *gon-o-, suffixed form of root *gen- "to give birth, beget" (see genus).