英语词源字典 - 在线词源网站

expansive (adj.)[expansive 词源字典]: 1650s, "tending to expand," from Latin expans-, past participle stem of expandere "to spread out" (see expand) + -ive. Meaning "embracing a large number of particulars, comprehensive" is by 1813. Related: Expansively; expansiveness.[expansive etymology, expansive origin, 英语词源]
expat (n.): 1962, shortening of expatriate (n.).
expatiate (v.): 1530s, "walk about, roam freely," from Latin expatiatus/exspatiatus, past participle of expatiari/exspatiari "wander, digress, wander from the way; spread, extend," from ex- "out" (see ex-) + spatiari "to walk, spread out," from spatium (see space (n.)). Meaning "talk or write at length" is 1610s. Related: Expatiated; expatiating.
expatiation (n.): 1610s, noun of action from expatiate.
expatriate (v.): 1768, modeled on French expatrier "banish" (14c.), from ex- "out of" (see ex-) + patrie "native land," from Latin patria "one's native country," from pater (genitive patris) "father" (see father (n.); also compare patriot). Related: Expatriated; expatriating. The noun is by 1818, "one who has been banished;" main modern sense of "one who chooses to live abroad" is by 1902.
expatriation (n.): 1767, from French expatriation, noun of action from expatrier (see expatriate).
expect (v.): 1550s, "wait, defer action," from Latin expectare/exspectare "await, look out for; desire, hope, long for, anticipate; look for with anticipation," from ex- "thoroughly" (see ex-) + spectare "to look," frequentative of specere "to look at" (see scope (n.1)).

Figurative sense of "anticipate, look forward to" developed in Latin and is attested in English from c. 1600. Also from c. 1600 as "regard as about to happen." Meaning "count upon (to do something), trust or rely on" is from 1630s. Used since 1817 as a euphemism for "be pregnant." In the sense "suppose, reckon, suspect," it is attested from 1640s but was regarded as a New England provincialism. Related: Expected; expecting.
expectancy (n.): 1590s, from Medieval Latin expectantia, from Latin expectans (see expectant) + -ancy. Related: Expectance.
expectant (adj.): late 14c., from Old French expectant or directly from Latin expectantem/exspectantem (nominative expectans/exspectans), present participle of expectare/exspectare "await, desire, hope" (see expect). Meaning "pregnant" is by 1861. Related: Expectantly. As a noun, "one who waits in expectation," from 1620s.
expectation (n.): 1530s, from Middle French expectation (14c.) or directly from Latin expectationem/exspectationem (nominative expectatio/exspectatio) "anticipation, an awaiting," noun of action from past participle stem of expectare/exspectare (see expect). Related: Expectations.
expectorant (n.): in medicine, 1782, from Latin expectorantem (nominative expectorans), present participle of expectorare (see expectorate). From 1811 as an adjective.
expectorate (v.): c. 1600, "to clear out the chest or lungs," a literal use of Latin expectoratus, past participle of expectorare, which in classical use was figurative, "scorn, expel from the mind," literally "drive from the breast, make a clean breast," from ex- "out" (see ex-) + pectus (genitive pectoris) "breast" (see pectoral (adj.)). Its use as a euphemism for "spit" is recorded by 1827. The classical Latin figurative sense appears in English 17c. but is now obsolete. Related: Expectorated; expectorating.
expectoration (n.): 1670s, noun of action from expectorate.
expediate (v.): a 17c. error for expedite that has gotten into the dictionaries.
expedience (n.): mid-15c., "advantage, benefit," from Old French expedience, from Late Latin expedientia, from expedientem (see expedient). From "that which is expedient," the sense tends toward "utilitarian wisdom." Meaning "quality of being expedient" is from 1610s. Related: Expediency (1610s).
expedient (adj.): late 14c., "advantageous, fit, proper to a purpose," from Old French expedient "useful, beneficial" (14c.) or directly from Latin expedientem (nominative expediens) "beneficial," present participle of expedire "make fit or ready, prepare" (see expedite). The noun meaning "a device adopted in an exigency, that which serves to advance a desired result" is from 1650s. Related: Expediential; expedientially (both 19c.).
Expedient, contrivance, and device indicate artificial means of escape from difficulty or embarrassment; resource indicates natural means or something possessed; resort and shift may indicate either. [Century Dictionary]
expediently (adv.): late 14c., from expedient (adj.) + -ly (2).
expedite (v.): c. 1500 (implied in past participle expedit "accomplished"), from Latin expeditus, past participle of expedire "extricate, disengage, liberate; procure, make ready, put in order, make fit, prepare; explain, make clear," literally "free the feet from fetters," hence to liberate from difficulties, from ex- "out" (see ex-) + *pedis "fetter, chain for the feet," related to pes (genitive pedis) "foot," from PIE root *ped- (1) "a foot" (see foot (n.)). Compare Greek pede "fetter." Related: Expedited; expediting.
expedition (n.): early 15c., "military campaign; the act of rapidly setting forth," from Old French expedicion "an expediting, implementation; expedition, mission" (13c.) and directly from Latin expeditionem (nominative expeditio) "an enterprise against an enemy, a military campaign," noun of action from past participle stem of expedire "make ready, prepare" (see expedite). Meaning "journey for some purpose" is from 1590s. Sense by 1690s also included the body of persons on such a journey.
expeditionary (adj.): 1803, from expedition + -ary.