英语词源字典 - 在线词源网站

obsequies (n.)[obsequies 词源字典]: "funeral rites," plural of obsequy.[obsequies etymology, obsequies origin, 英语词源]
obsequious (adj.): late 15c., "prompt to serve," from Middle French obséquieux (15c.), from Latin obsequiosus "compliant, obedient," from obsequium "compliance, dutiful service," from obsequi "to accommodate oneself to the will of another," from ob "after" (see ob-) + sequi "to follow" (see sequel). Pejorative sense of "fawning, sycophantic" had emerged by 1590s. Related: Obsequiously; obsequiousness (mid-15c.).
obsequy (n.): late 14c., from Old French obseque, osseque "funeral rites," from Medieval Latin obsequiae, influenced in sense by confusion of Latin obsequium "compliance" (see obsequious) with exsequiae "funeral rites." Now usually in plural, obsequies.
observable (adj.): c. 1600, from Latin observabilis "remarkable, observable," from observare (see observe). Related: Observably; observability.
observance (n.): early 13c., "act performed in accordance with prescribed usage," especially a religious or ceremonial one, from Old French observance, osservance "observance, discipline," or directly from Latin observantia "act of keeping customs, attention, respect, regard, reverence," from observantem (nominative observans), present participle of observare (see observe). Observance is the attending to and carrying out of a duty or rule. Observation is watching, noticing.
observant (adj.): 1590s, from observe + -ant, or else from French observant, past participle of observer (see observance). In reference to Judaism, from 1902. As a noun from late 15c. Related: Observantly; observantness.
observation (n.): late 14c., "performance of a religious rite," from Latin observationem (nominative observatio) "a watching over, observance, investigation," noun of action from past participle stem of observare (see observe). Sense of "act or fact of paying attention" is from 1550s. Meaning "a remark in reference to something observed" first recorded 1590s.
observative (adj.): 1610s, from Latin observat-, past participle stem of observare (see observe) + -ive.
observatory (n.): "building for observing astronomical phenomena," 1670s (in reference to Greenwich), from French observatoire, from observer (v.); see observe.
observe (v.): late 14c., "to hold to" (a manner of life or course of conduct), from Old French observer, osserver "to observe, watch over, follow" (10c.), from Latin observare "watch over, note, heed, look to, attend to, guard, regard, comply with," from ob "over" (see ob-) + servare "to watch, keep safe," from PIE root *ser- (1) "to protect." Meaning "to attend to in practice, to keep, follow" is attested from late 14c. Sense of "watch, perceive, notice" is 1560s, via notion of "see and note omens." Meaning "to say by way of remark" is from c. 1600. Related: Observed; observing.
observer (n.): 1550s, "one who keeps a rule, custom, etc.," agent noun from observe. Meaning "one who watches and takes notice" is from 1580s; this is the sense of the word in many newspaper names.
obsess (v.): c. 1500, "to besiege," from Latin obsessus, past participle of obsidere "watch closely; besiege, occupy; stay, remain, abide" literally "sit opposite to," from ob "against" (see ob-) + sedere "sit" (see sedentary). Of evil spirits, "to haunt," from 1530s. Psychological sense is 20c. Related: Obsessed; obsessing.
obsessed (adj.): mid-15c., "tormented, obsessed," past participle adjective from obsess. Originally especially "possessed" by a devil, etc.
obsession (n.): 1510s, "action of besieging," from French obsession and directly from Latin obsessionem (nominative obsessio) "siege, blockade, a blocking up," noun of action from past participle stem of obsidere "to besiege" (see obsess). Later (c. 1600), "hostile action of an evil spirit" (like possession but without the spirit actually inhabiting the body). Transferred sense of "action of anything which engrosses the mind" is from 1670s. Psychological sense is from 1901.
obsessive (adj.): 1911, from obsess + -ive. Related: Obsessively. Obsessive-compulsive is attested from 1927.
obsidian (n.): "dark, hard volcanic rock," 1650s, from Latin obsidianus, misprint of Obsianus (lapis) "(stone) of Obsius," name of a Roman alleged by Pliny to have found this rock in Ethiopia.
obsolesce (v.): 1801, from Latin obsolescere "to grow old, wear out, lose value, become obsolete," inchoative of obsolere "fall into disuse" (see obsolete). Related: Obsolesced; obsolescing.
obsolescence (n.): 1809; see obsolescent + -ence. Phrase Planned obsolescence coined 1932, revived as a disparaging term 1950s.
obsolescent (adj.): 1755, from Latin obsolescentum (nominative obsolescens), present participle of obsolescere "fall into disuse" (see obsolete).
obsolete (adj.): 1570s, from Latin obsoletus "grown old, worn out," past participle of obsolescere "fall into disuse," probably from ob "away" (see ob-) + an expanded form of solere "to be used to, be accustomed" (see insolent).