Online Etymology Dictionary

pussy-willow (n.): 1869, on notion of "soft and furry," a children's word, from pussy (n.1) + willow.
rheo-: word-forming element meaning "current of a stream," from Greek rheos "a flowing, stream, current," from PIE root *sreu-; see rheum.
-some (3): word-forming element meaning "the body," Modern Latin, from Greek soma "the body" (see somato-).
somni-: before vowels somn-, word-forming element meaning "sleep," from comb. form of Latin somnus (see Somnus).
soupy (adj.): "like soup; wet," 1828 (noted then as a Yorkshire word), from soup (n.) + -y (2). Related: Soupiness.
semi-demi-: word-forming element meaning "sixty-fourth part," 1660s; see semi- + demi-.
septem-: word-forming element meaning "seven," from Latin septem-, from septem "seven" (see seven).
Senegal: African nation, named for the river through it, perhaps from a local word meaning "navigable."
septi-: before vowels sept-, word-forming element meaning "seven," from Latin septem (see seven).
sacro-: word-forming element meaning "of or involving the sacrum, the bone at the base of the spine. E.g. sacro-iliac.
shin (v.): "to climb by using arms and legs" (originally a nautical word), 1829, from shin (n.). Related: Shinned; shinning.
sialo-: before vowels sial-, word-forming element meaning "saliva," from comb. form of Greek sialon "saliva."
staycation (n.): also stay-cation, 2008, American English, a word from the "Great Recession" of that year, from stay (v.1) + ending from vacation.
sphygmo-: word-forming element meaning "pulse," from comb. form of Greek sphygmos "a pulse," from sphyzein "to throb, pulse, beat."
spleno-: before vowels splen-, word-forming element meaning "spleen, spleen and," from comb. form of Greek splen (see spleen).
Struldbrug (n.): "person who never dies but becomes senile and useless," 1726, from "Gulliver's Travels," a made-up word.
-genesis: word-forming element meaning "birth, origin, creation," from Greek genesis (see genesis).
galacto-: before vowels galact-, word-forming element meaning "milk, milky," from Greek gala (stem galakt-; see galaxy).
Ghent: city in Flanders, of uncertain origin; perhaps from Celtic *condate "confluence," or from a non-Indo-European word.
-faction: word-forming element making nouns of action from verbs, from Latin -factionem (nominative -factio), from facere "to make" (see factitious).
cross-: word-forming element typically representing cross as a verb, adverb, adjective, and in many words a confluence of them.
erythro-: before vowels erythr-, word-forming element meaning "red," from comb. form of Greek erythros "red" (see red (1)).
Indo-: word-forming element meaning "of or pertaining to India" (and some other place), from Greek Indo-, from Indos "India" (see India).
Hibernicism (n.): 1758, "use of a word or phrase considered peculiar to the Irish," from stem of Hibernia "Ireland" + -ism.
humbleness (n.): late 14c., from humble (adj.) + -ness. Wyclif's word; Chaucer uses the Frenchified humblesse.
hymeno-: word-forming element used in technical and scientific compounds, "membrane," from Greek hymen "membrane" (see hymen).
ideo-: word-forming element variously used with reference to images or to ideas, from Greek idea (see idea).
igneo-: word-forming element meaning "of fire; of fire and; of igneous origin," from Latin igneus (see igneous).
jumart (n.): fabulous hybrid animal, 1680s, from French jumart, jumare, from Provençal gemerre, gemarre, a word of uncertain origin.
halt (v.1): "make a halt," 1650s, from halt (n.). As a command word, attested from 1796. Related: Halted; halting.
-lect: word-forming element abstracted 20c. from dialect and in words meaning a regional or social variety of a language.
lexico-: word-forming element, "pertaining to words or lexicons; lexical and," from Latinized form of Greek lexikos "pertaining to words" (see lexicon).
lieno-: word-forming element meaning "spleen, pertaining to the spleen, spleen and," from Latin lien "spleen" (see spleen).
like-minded (adj.): also likeminded, "with like purpose or disposition," 1520s, from like (adj.) + minded. One word from 19c.
lineo-: word-forming element, used as a comb. form of Latin linea (see line (n.)).
Lisbon: capital of Portugal, Portuguese Lisboa, perhaps from a Phoenician word; the derivation from Ulysses probably is folk-etymology.
Canada: 1560s (implied in Canadian), said to be a Latinized form of a word for "village" in an Iroquoian language of the St. Lawrence valley that had gone extinct by 1600. Most still-spoken Iroquoian languages have a similar word (such as Mohawk kana:ta "town"). Canada goose is attested from 1772.
hammock (n.): type of hanging bed, 1650s, alteration of hamack, hamaca (1550s), from Spanish hamaca, from Arawakan (Haiti) word apparently meaning "fish nets" (compare Yukuna hamaca, Taino amaca). The forms of the word in Dutch (hangmat) and German (Hangmatte) were altered by folk-etymology as if it meant "hang-mat."
ea (n.): the usual Old English word for "river, running water" (still in use in Lancashire, according to OED); see aqua-. "The standard word in place-names for river denoting a watercourse of greater size than a broc or a burna" [Cambridge Dictionary of English Place-Names].
papa (n.): "father," 1680s, from French papa, from Latin papa, originally a child's word, similar to Greek pappa (vocative) "o father," pappas "father," pappos "grandfather." The native word is daddy; first use of papa was in courtly speech, as a continental affectation, not used by common folk until late 18c.
catechize (v.): early 15c., from Church Latin catechizare "to teach by word of mouth" (also source of French catéchiser, Spanish catequizar, Italian catechizzare), from Greek katekhizein "teach orally, instruct by word of mouth," from katekhein "to resound" (see catechesis). Related: Catechized; catechizing.
glabella (n.): "space between the eyebrows," 1590s, Modern Latin, noun use of fem. of adjective glabellus "without hair, smooth," diminutive of glaber "smooth, bald," from PIE *gladh- "smooth" (see glad) + diminutive word-forming element -ella. As the word for a part of the head of a trilobite, from 1849.
neologism (n.): "practice of innovation in language," 1772 (in a translation from French), from French néologisme, from neo- (see neo-) + Greek logos "word" (see lecture (n.)) + -ism. Meaning "new word or expression" is from 1803. Neological is attested from 1754.
diaspora (n.): 1876, from Greek diaspora "dispersion," from diaspeirein "to scatter about, disperse," from dia- "about, across" (see dia-) + speirein "to scatter" (see sprout). The Greek word was used in Septuagint in Deut. xxviii:25. A Hebrew word for it is galuth "exile." Related: Diasporic.
diminutive (adj.): in grammar, late 14c. (also as a noun, "derivative word denoting a small or inferior example of what is meant by the word it is derived from"), from Old French diminutif (14c.), from Latin diminutivus, earlier deminutivus, from past participle stem of deminuere (see diminish).
onomatopoeia (n.): 1570s, from Late Latin onomatopoeia, from Greek onomatopoiia "the making of a name or word" (in imitation of a sound associated with the thing being named), from onomatopoios, from onoma (genitive onomatos) "word, name" (see name (n.)) + a derivative of poiein "compose, make" (see poet). Related: Onomatopoeic; onomatopoeial.
noodle (n.): "narrow strip of dried dough," 1779, from German Nudel, which is of unknown origin. West Flemish noedel and French nouille are German loan-words. The older noun meaning "simpleton, stupid person" (1753) probably is an unrelated word, as is the slang word for "head" (attested from 1914).
Amaretto: Italian almond-flavored liqueur, 1945 (the original brand, Amaretto di Saronno, dates to 1851), from the Italian word for almond (q.v.), which did not acquire the excrescent -l- of the English word. Sometimes confused with amoretto. Amoroso (literally "lover"), a type of sweetened sherry, is attested from c. 1870.
ipecac (n.): dried root of a South American shrub, used as an emetic, purgative, nauseant, etc., 1710, borrowing via Portuguese of a shortened form of Tupi ipecacuana (a word attested in English from 1682), a medicinal plant of Brazil. The Indian word is said to mean "small plant causing vomit."
Anglian: "of the Angles," 1726; see Angle. The Old English word was Englisc, but as this came to be used in reference to the whole Germanic people of Britain, a new word was wanted to describe this one branch of them.