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execute [execute 词源字典]: execute: [14] The original meaning of execute in English was ‘carry out’, but the sense ‘kill judicially’ had already developed by the end of the 15th century (it comes from the notion of ‘carrying out’ a sentence). The word comes via Old French executer from medieval Latin executāre, a derivative of Latin exsequī. This, a compound formed from the intensive prefix exand sequī ‘follow’ (source of English consecutive, consequent, obsequious, sequence, subsequent, etc), meant originally ‘follow to the end, pursue’, and hence ‘follow through, carry out, fulfil’.

Its derivative exsequiās ‘funeral procession’ produced English exequies [14].
=> consecutive, consequent, obsequious, sequence, subsequent[execute etymology, execute origin, 英语词源]
execrable (adj.): "abominable, deserving of curses," late 14c., from Old French execrable and directly from Latin execrabilis/exsecrabilis "execrable, accursed," from execrari/exsecrari "to curse; to hate" (see execrate). Related: Execrably.
execrate (v.): 1560s, from Latin execratus/exsecratus, past participle of execrari/exsecrari "to curse, utter a curse, take a solemn oath with imprecations; hate, abhor," from ex- (see ex-) + sacrare "to devote to" (see sacred). Hence, "to devote off or away; to curse." Related: Execrated; execrating.
execration (n.): late 14c., "cursing, act of laying under a curse," from Latin execrationem (nominative execratio) "malediction, curse," noun of action from past participle stem of execrari "to hate, curse," from ex- "out" (see ex-) + sacrare "to devote to holiness or to destruction, consecrate," from sacer "sacred" (see sacred). From 1560s as "an uttered curse."
execute (v.): late 14c. "to carry into effect" (transitive, mostly in law with reference to warrants, sentences, etc.), also "carry out or accomplish a course of action" (intransitive), from Old French executer (14c.), from Medieval Latin executare, from Latin execut-/exsecut-, past participle stem of exequi/exsequi "to follow out, to follow to the grave," figuratively "to follow, follow after, accompany, follow up, prosecute, carry out, enforce; execute, accomplish; punish, avenge," from ex- "out" (see ex-) + sequi "follow" (see sequel). Meaning "to inflict capital punishment" is from late 15c., from earlier legal sense "perform judgment or sentence on" (early 15c.). Related: Executed; executing.
execution (n.): late 14c., "a carrying out, a putting into effect; enforcement; performance (of a law, statute, etc.), the carrying out (of a plan, etc.)," from Anglo-French execucioun (late 13c.), Old French execucion "a carrying out" (of an order, etc.), from Latin executionem (nominative executio) "an accomplishing," noun of action from past participle stem of exequi/exsequi "to follow out" (see execute).

Specific sense of "act of putting to death" (mid-14c.) is from Middle English legal phrases such as don execution of deth "carry out a sentence of death." Literal meaning "action of carrying something into effect" is from late 14c. John McKay, coach of the woeful Tampa Bay Buccaneers (U.S. football team), when asked by a reporter what he thought of his team's execution, replied, "I think it would be a good idea." Executor and executioner were formerly used indifferently, because both are carrying out legal orders.
executioner (n.): "headsman," 1560s; "one who carries into effect," 1590s; agent noun from execution. Old English words for it included flæscbana, flæscwellere.
executive (adj.): mid-15c., "performed, carried out;" 1640s, "of the branch of government that carries out the laws," from Middle French executif, from Latin executivus, from past participle stem of exequi "follow after; carry out, accomplish" (see execution). The noun in this sense is from 1776, as a branch of government charged with the execution and enforcement of the laws. Meaning "high-ranking businessman" is 1902 in American English; hence the adjectival sense "stylish, luxurious, costly" (1970s). Executive privilege is attested by 1805, American English.
executor (n.): c. 1300, "person appointed to see that a will is carried into effect," from Anglo-French executour, from Latin executorem/exsecutorem, agent noun from exsequi/exsequi "follow after; carry out, accomplish" (see execution). Fem. form executrix is attested from late 14c. (executrice).

Compare executioner, and also executant "one who does or performs" (especially a musical performer), from 1858; executer "one who performs" (1530s).
executant: "A person who puts something into effect", Mid 19th century: from French exécutant 'carrying out', present participle of exécuter (see execute).
executrix: "A female executor of a will", Late Middle English: from late Latin, from Latin executor (see executor).