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where (adv.)[where 词源字典]: Old English hwær, hwar "at what place," from Proto-Germanic adverb *hwar (cognates: Old Saxon hwar, Old Norse hvar, Old Frisian hwer, Middle Dutch waer, Old High German hwar, German wo, Gothic hvar "where"), equivalent to Latin cur, from PIE interrogative base *kwo- (see who). Where it's at attested from 1903.[where etymology, where origin, 英语词源]
whereabout (adv.): "near what place," early 14c. as an interrogatory word, from where + about.
whereabouts (adv.): "in what place," early 15c., from whereabout + adverbial genitive -s. The noun, "place where someone or something is," is recorded from 1795. Whereabout in this sense is from c. 1600.
whereas (adv.): mid-14c., "where;" early 15c. as a conjunction, "in consideration of the fact that," from where + as.
whereat (adv.): mid-13c., from where + at.
whereby (adv.): c. 1200, from where + by.
wherefore (adv.): c. 1200, hwarfore, from where + for. Similar formation in Dutch waarvoor, Old Norse hvar fyrir, Swedish varfor.
wherein (adv.): early 13c., from where + in. Similar formation in Dutch waarin, German worin, Swedish vari, Danish hvori.
whereof (adv.): c. 1200, from where + of. Similar formation in Swedish hveraf, Danish hvoraf, Dutch waarvan.
whereon (adv.): c. 1200, from where + on (adv.).
whereupon (conj.): c. 1300, from where + upon.
wherever (adv.): late 13c., ware euere, from where + ever. Originally an emphatic extension of where. Meaning "at any place, at some place or another" is from 1660s.
wherewith (adv.): c. 1200, from where + with.
wherewithal (adv.): "means by which," 1530s, from where + withal. The noun is first recorded 1809.
wherry (n.): "light, shallow rowboat," mid-15c., of unknown origin.
whet (v.): Old English hwettan "to whet, sharpen," figuratively "incite, encourage," from Proto-Germanic *hwatjan (cognates: Old Norse hvetja "to sharpen, encourage," Middle Low German, Middle Dutch wetten, Old High German wezzan, German wetzen "to sharpen," Gothic ga-hvatjan "to sharpen, incite"), from PIE root *kwed- "to sharpen" (cognates: Sanskrit codati "incites," literally "sharpens;" Old English hwæt "brave, bold," Old Saxon hwat "sharp").
whether (conj.): Old English hwæðer, hweðer "which of two, whether," from Proto-Germanic *gihwatharaz (cognates Old Saxon hwedar, Old Norse hvarr, Gothic huaþar, Old High German hwedar "which of the two," German weder "neither"), from interrogative base *khwa- "who" (see who) + comparative suffix *-theraz (cognate compounds in Sanskrit katarah, Avestan katara-, Greek poteros, Latin uter "which of the two, either of two," Lithuanian katras "which of the two," Old Church Slavonic koteru "which"). Its comparative form is either. Also in Old English as a pronoun and adjective. Phrase whether or not (also whether or no) recorded from 1650s.
whetstone (n.): Old English hwetstan; see whet + stone (n.).
whew: exclamation of astonishment, etc., early 15c., a whistling sound, of imitative origin.
whey (n.): Old English hwæg "whey," from Proto-Germanic *hwaja- (cognates: Middle Dutch wey, Dutch wei), of unknown origin.