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cachet [cachet 词源字典]: cachet: [17] Cachet was a Scottish borrowing of a French word which originally meant ‘seal affixed to a letter or document’. In the 19th century this developed into the figurative ‘personal stamp, distinguishing characteristic’, which, through its use in the context of distinguished or fashionable people or things, has come to mean ‘prestige’. The original notion contained in the word is of ‘pressing’.

It comes via the medieval French verb cacher ‘press’ from Latin coactāre ‘constrain’. This was a derivative of coact-, the past participial stem of cōgere ‘drive together’ (source of English cogent), a compound verb formed from con- ‘together’ and agere ‘drive’ (source of English act and a host of other derivatives from agent to prodigal).

Modern French cacher means ‘hide’, which is the source of cache ‘hoard’, borrowed by English in the 19th century.
=> cache, cogent[cachet etymology, cachet origin, 英语词源]
cogent (adj.): 1650s, from French cogent "necessary, urgent" (14c.), from Latin cogentem (nominative cogens), present participle of cogere "to curdle; to compel; to collect," literally "to drive together," from com- "together" (see co-) + agere "to drive" (see act (n.)).
compel (v.): mid-14c., from Old French compellir, from Latin compellere "to drive together, drive to one place" (of cattle), "to force or compel" (of persons), from com- "together" (see com-) + pellere "to drive" (see pulse (n.1)). Related: Compelled; compelling.
compulsive (adj.): c. 1600, from French compulsif, from Latin compulsus, past participle of compellere "to drive together, force, compel" (see compel). Psychological sense is from 1902. As a noun, attested from 1630s; psychological sense from 1957. Related: Compulsively; compulsiveness.
compulsory (adj.): 1580s, from Medieval Latin compulsorius, from Latin compulsus, past participle of compellere "to drive together, force, compel" (see compel).
madden (v.): "to drive to distraction," 1822; earlier "to be mad" (1735), from mad (adj.) + -en (1). Related: Maddened; maddening. The earlier verb was simply mad (early 14c., intransitive; late 14c., transitive), from the adjective.
tail-gate (n.): 1868, back panel on a wagon, hinged to swing down and open, from tail (n.1) + gate (n.). Extended by 1950 to hatchback door on an automobile. The verb (also tailgate) meaning "to drive too close behind another vehicle" is from 1951 ("Truck drivers know the practice of following too close as tail-gating" - "Popular Science," Jan. 1952); as an adjective, in reference to the open tail-gate of a parked car as a setting for a party or picnic, from 1958. Related: Tail-gating.