chooseyoudaoicibaDictYouDict[choose 词源字典]
choose: [OE] Choose is a verb of ancient pedigree. It can be traced back to the prehistoric Indo-European base *geus-, whose descendants in other Indo-European languages include Latin gustus ‘taste’, source of English gusto and gustatory and French goût. Its Germanic offshoot, *kiusan, produced a diversity of forms in the early Middle Ages, including Old English cēosan, but most of them, apart from English choose and Dutch kiezen, have now died out.

Germanic had an alternative version of the verb, however, *kausjan, and this was borrowed into Gallo-Roman as causīre, which provided the basis of Old French choisir ‘choose’, and hence of chois, source of English choice.
=> choice, gusto[choose etymology, choose origin, 英语词源]
choose (v.)youdaoicibaDictYouDict
Old English ceosan "choose, seek out, select; decide, test, taste, try; accept, approve" (class II strong verb; past tense ceas, past participle coren), from Proto-Germanic *keus- (cognates: Old Frisian kiasa, Old Saxon kiosan, Dutch kiezen, Old High German kiosan, German kiesen, Old Norse kjosa, Gothic kiusan "choose," Gothic kausjan "to taste, test"), from PIE root *geus- "to taste, relish" (see gusto). Only remotely related to choice. Variant spelling chuse is Middle English, very frequent 16c.-18c. The irregular past participle leveled out to chosen by 1200.