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annex [annex 词源字典]: annex: [14] The verb annex entered English about a century and a half before the noun. It came from French annexer, which was formed from the past participial stem of Latin annectere ‘tie together’ (a verb annect, borrowed directly from this, was in learned use in English from the 16th to the 18th centuries). Annectere itself was based on the verb nectere ‘tie’, from which English also gets nexus and connect. The noun was borrowed from French annexe, and in the sense ‘extra building’ retains its -e.
=> connect, nexus[annex etymology, annex origin, 英语词源]
connect: connect: [17] Etymologically, connect means ‘tie together’. It comes from Latin connectere, a compound verb formed from the prefix com- ‘together’ and nectere ‘bind, tie’ (whose past participial stem, nex-, is the ultimate source of English nexus [17]). The derived noun connection first appeared, in the spelling connexion, in the 14th century.
=> nexus
alloy (v.): c. 1400, "mix with a baser metal," from Old French aloiier "assemble, join," from Latin alligare "bind to, tie to," compound of ad- "to" (see ad-) + ligare "to bind" (see ligament); hence "bind one thing to another." Related: Alloyed; alloying.
apt (adj.): mid-14c., "inclined, disposed;" late 14c., "suited, fitted, adapted," from Old French ate (13c., Modern French apte), or directly from Latin aptus "fit, suited," adjectival use of past participle of *apere "to attach, join, tie to," from PIE root *ap- (1) "to grasp, take, reach" (cognates: Sanskrit apnoti "he reaches," Latin apisci "to reach after, attain," Hittite epmi "I seize"). Elliptical sense of "becoming, appropriate" is from 1560s.