Online Etymology Dictionary

Egbert: masc. proper name, from Old English Ecg-beorht, literally "sword-bright." See edge (n.) + bright (adj.).
gangster (n.): "member of a criminal gang," 1896, American English, from gang (n.) in its criminal sense + -ster. Related: Gangsterism (1918).
handicraft (n.): c. 1200, hændecraft, a corruption (perhaps from influence of handiwork) of Old English handcræft "skill of the hand," from hand (n.) + craft (n.).
karaoke (n.): 1979, Japanese, from kara "empty" + oke "orchestra," the latter a shortened form of okesutora, which is a Japanning of English orchestra.
kn-: Middle English spelling of a common Germanic consonant-cluster (in Old English it was graphed as cn-; see K). The sound it represented persists in most of the sister languages, but in English it was reduced to "n-" in standard pronunciation by 1750, after about a century of weakening and fading. It was fully voiced in Old and Middle English.
earthquake (n.): late 13c., eorthequakynge, from earth + quake (n.). In this sense Old English had eorðdyn, eorðhrernes, eorðbeofung, eorðstyrung.
hangnail (n.): also hang-nail, 1670s, probably folk etymology alteration (as if from hang (v.) + (finger) nail) of Middle English agnail, angnail, from Old English agnail, angnail "a corn on the foot," perhaps literally a "painful spike" (in the flesh), from Proto-Germanic *ang- "compressed, hard, painful" (from PIE *angh- "tight, painfully constricted, painful;" see anger) + Old English nægl "spike" (see nail (n.)). Compare Old English angnes "anxiety, trouble, pain, fear," angset "eruption, pustule."
jai alai (n.): 1902, American English, originally in a Cuban context, from Basque, from jai "celebration" + alai "merry."
Jaycee (n.): 1937, American English, acronym from pronunciation of J.C. (pronounced "jay-cee"), abbreviation of Junior Chamber (of Commerce).
jerky (n.): 1850, American English, from American Spanish charqui "jerked meat," from Quechua (Inca) ch'arki "dried flesh."
necktie (n.): 1838, from neck (n.) + tie (n.). American English slang necktie party "a lynching" is recorded from 1871.
off-color (adj.): 1858, from off (adv.) + color (n.); originally used of gems; figurative extension to "of questionable taste, risqué" is American English, 1867.
offside: also off-side, 1867, in various sporting senses, originally in English football; from off + side (n.).
unicycle (n.): 1869, American English, from Latin uni- "one" (see uni-) + -cycle, from bicycle (from Greek kyklos "circle, wheel").
up-: prefix with various senses, from Old English up (adv.), corresponding to similar prefixes in other Germanic languages.
varicolored (adj.): "diversified in color, motley," also vari-colored, 1660s, from Latin varius (see vary) + English colored (adj.).
veldt (n.): also veld, South African grassland, 1785, from Afrikaans, from older Dutch veld "field;" related to English field (n.).
fiesta (n.): 1844 as a Spanish word in English, "Spanish-American religious festival," Spanish, literally "feast" (see feast (n.)).
malarkey (n.): also malarky, "lies and exaggerations," 1924, American English, of unknown origin. It also is a surname.
bazooms (n.): "woman's breasts," especially when deemed prominent, 1955, American English slang alteration of bosoms.
yep: by 1889, American English, variant of yes, altered for emphasis, or possibly influenced by nope.
verily (adv.): "in truth," early 14c., from Middle English verray "true, real" (see very) + -ly (2).
adios: 1837, American English, from Spanish adios, from phrase a dios vos acomiendo "I commend you to God" (see adieu).
teethe (v.): early 15c., probably from an unrecorded Old English verb *teþan, from toþ (see tooth). Related: Teethed; teething.
reet (adj.): "good, proper, excellent," 1934, jazz slang, from American English dialectal pronunciation of right (adj.).
Reading: county town of Berkshire, Old English Readingum (c.900), "(Settlement of) the family or followers of a man called *Read."
begrudge (v.): mid-14c., from be- + Middle English grucchen "to murmur" (see grudge). Related: Begrudged; begrudging; begrudgingly.
behead (v.): Old English beheafdian, from be-, here with privative force, + heafod (see head (n.)). Related: Beheaded; beheading.
bemoan (v.): Old English bemænan "to bemoan, wail, lament;" see be- + moan (v.). Related: Bemoaned; bemoaning.
weltanschauung (n.): 1868 (William James), from German Weltanschauung, from welt "world" (see world) + anschauung "perception" (related to English show).
whey (n.): Old English hwæg "whey," from Proto-Germanic *hwaja- (source also of Middle Dutch wey, Dutch wei), of unknown origin.
chaps (n.1): 1844, American English, short for chaparejos, from Mexican Spanish chaparreras, overalls worn to protect from chaparro (see chaparral).
widget (n.): "gadget, small manufactured item," c. 1920, American English, probably an alteration of gadget, perhaps based on which it.
nineteen (n.): late Old English nigontene (Anglian), nigontyne (West Saxon); see nine + -teen.
oncology (n.): 1857, coined in English from onco- "tumor" + -logy "science or study of." Related: Oncologist; oncological.
goober (n.): "peanut," 1833, gouber, American English, from an African language, perhaps Bantu (compare Kikongo and Kimbundu nguba "peanut").
helmet (n.): mid-15c., perhaps a diminutive of Middle English helm (see helm (n.2)). But Barnhart and OED say from Middle French helmet (Modern French heaume), diminutive of helme "helmet," from the same Germanic source as helm (n.2). "Middle English Dictionary" points to both without making a choice. "Old English helm never became an active term in the standard vocabulary of English" [Barnhart].
glug (n.): 1768, imitative of the sound of swallowing a drink, etc. From 1895 as a verb. Compare Middle English glub "to swallow greedily."
Hertfordshire: Old English Heortfordscir, from Herutford (731), literally "ford frequented by harts;" see hart (n.) + ford (n.).
Maryland: U.S. state, named for Henrietta Maria (1609-1669), wife of English King Charles I. Related: Marylander.
nubbin (n.): "stunted ear of corn," 1690s, American English diminutive of nub. General sense of "small piece" is from 1857.
nohow (adv.): "not at all," 1775, American English, from no + how, on model of nowhere.
no-name (adj.): 1978, "not having made a name in one's profession," originally American English sporting jargon, from no + name (n.).
nor (conj.): c. 1300, contraction of Middle English nauther (see neither). Influenced in form by or.
outage (n.): "period or condition in which electrical power is disconnected," 1903, American English; formed from out on model of shortage.
outhouse (n.): early 14c., "shed, outbuilding," from out + house (n.). Sense of "a privy" (principally American English) is first attested 1819.
thegn (n.): "military tenant of an Anglo-Saxon king," 1848, a modern revival of an Old English form; see thane.
-worth: as final element in place names, from Old English worþ "enclosed place, homestead."
wot (v.): "to know" (archaic), from Old English wat, first and third person singular present indicative of witan "to know" (see wit (v.)).
Betamax (n.): 1975, proprietary name (Sony), from Japanese beta-beta "all over" + max, from English maximum.