英语词源字典 - 在线词源网站

Clara [Clara 词源字典]: fem. personal name, from Latin Clara, from fem. of clarus "bright, shining, clear" (see clear (adj.) and compare Claire). Derivatives include Clarisse, Clarice, Clarabel, Claribel. The native form Clare was common in medieval England, perhaps owing to the popularity of St. Clare of Assisi.[Clara etymology, Clara origin, 英语词源]
declarant (n.): 1680s, from French déclarant, from Latin declarantem (nominative declarans), present participle of declarare (see declare).
declaration (n.): mid-14c., "action of stating," from Old French declaration, from Latin declarationem (nominative declaratio), noun of action from past participle stem of declarare (see declare). Meaning "proclamation, public statement" is from 1650s. Declaration of independence is recorded from 1776 (the one by the British American colonies seems to be the first so called; though the phrase is not in the document itself, it was titled that from the first in the press).
declarative (adj.): mid-15c., from French déclaratif and directly from Late Latin declarativus, from past participle stem of Latin declarare (see declare).
declaratory (adj.): mid-15c., from Medieval Latin declaratorius, from Latin declarator, from declarare (see declare).
exhilarate (v.): 1530s, from Latin exhilaratus "cheerful, merry," past participle of exhilarare "gladden, cheer," from ex- "thoroughly" (see ex-) + hilarare "make cheerful," from hilarus "cheerful" (see hilarity). Related: Exhilarated; exhilarating.
exhilaration (n.): 1620s, from Late Latin exhilarationem (nominative exhilaratio) "a gladdening," noun of action from past participle stem of exhilarare (see exhilarate).