Online Etymology Dictionary

wobbegong (n.): type of Australian shark, 1852, an Aboriginal word.
-tuple: 1863, word-forming element abstracted from quintuple, etc.
anymore (adv.): one-word form by 1865, from any + more.
Deutsch: the German word for "German;" see Dutch.
ileo-: word-forming element, from comb. form of ileum (q.v.).
manxome: 1871, a word invented by Lewis Carroll.
muskeg (n.): kind of moss bog, 1865, from a Cree Indian word.
colloquialism (n.): 1810, "a colloquial word or phrase," from colloquial + -ism.
commoditization (n.): 1965, from commodity + -ization; the businessman's word; the Marxist's is commodification.
Guyana: from a native word perhaps meaning "respectable." Related: Guyanese.
Gallicism (n.): "French word or idiom," 1650s, from Gallic + -ism.
-ologist: word-forming element; see -ology + -ist.
-metric: word-forming element representing -metry + -ic.
-ocracy: word-forming element; -cracy with a connective -o-.
plio-: word-forming element, Latinate form of pleio-.
-ular: word-forming element, see -ule + -ar.
video-: word-forming element; see video (adj.).
Guarani (n.): South American Indian language, 1797, from a native word.
phlebo-: word-forming element in medicine meaning "vein," from Greek phlebo-, comb. form of phleps "vein," a word of uncertain origin.
verbicide (n.): "the killing of a word" by perversion from its original meaning, 1836, from Latin verbum "word" (see verb) + -cide.
gematria (n.): 1680s, from Hebrew gematriya, a transliteration of Greek geometria (see geometry). "[E]xplanation of the sense of a word by substituting for it another word, so that the numerical value of the letters constituting either word is identical" [Klein].
henge (n.): 1740, noted as a Yorkshire word for hanging rocks (see Stonehenge).
non-combatant (n.): also noncombatant, 1809, from non- + combatant. A word from the Napoleonic wars.
logo (n.): 1937, probably a shortening of logogram "sign or character representing a word."
doodad (n.): "unnamed thing," 1905, chiefly U.S., a made-up word (compare doohickey).
drill (n.4): "West African baboon species," 1640s, perhaps from a native word (compare mandrill).
muggle (n.): "marijuana, a joint," 1926, apparently originally a New Orleans word, of unknown origin.
tangelo (n.): "hybrid of a tangerine and a pomelo," 1904, the word formed like the fruit.
spliff (n.): conical cannabis cigarette, 1936, a West Indian word, of unknown origin.
-ase: word-forming element used in naming enzymes, from ending of diastase.
aristocrat (n.): 1789, from French aristocrate, a word of the Revolution, a back-formation from aristocratie (see aristocracy).
alongside (adv.): 1707, from along + side (n.). A word formed from a phrase. Originally mostly nautical.
cacoon (n.): large, flat bean from an African shrub, 1854, from some African word.
uncomprehensible (adj.): late 14c., from un- (1) "not" + comprehensible. The usual word is incomprehensible.
toc: word used for the letter T in radio communication, 1898.
undecisive (adj.): 1660s, from un- (1) "not" + decisive. The usual word is indecisive.
unevitable (adj.): from un- (1) "not" + evitable. The usual word is inevitable. Related: Unevitably.
whereabout (adv.): "near what place," early 14c. as an interrogatory word, from where + about.
Yucatan: said to be from a local word meaning "massacre." Related: Yucatecan.
anytime (adv.): one-word form by 1854, from any + time (n.).
Hebe (2): derogatory word for "a Jew," 1921, shortened from Hebrew (n.).
garrot (n.): kind of sea-duck, 1829, from French garrot (1757), a word of unknown origin.
kidnapper (n.): 1670s; see kidnap (though this word is attested a few years earlier).
deferential (adj.): 1822, from deferent + -ial; as a word in anatomy, from 1877. Related: Deferentially.
ecumenism (n.): 1937, from ecumen- (see ecumenical) + -ism. The older word is ecumenicalism (1870).
onboard (adj.): 1966 as one word, from on + board (n.2).
om: mystical word in Hinduism, Buddhism; an utterance of assent, 1788.
oro-: word-forming element meaning "mountain," from Greek oros "mountain" (see oread).
-genic: word-forming element meaning "producing, pertaining to generation;" see -gen + -ic.
geoduck (n.): edible Pacific clam, 1883, perhaps from an American Indian word.