Acquaint
wiktionary
From Middle English aqueinten, acointen, from Old French acointier, from Late Latin accognitāre, from Latin ad + cognitus, past participle of cognoscere(“to know”), from con- + noscere(“to know”). See quaint, know.
etymonline
acquaint (v.)
early 13c., "make oneself known" (reflexive, now obsolete); early 14c., "to gain for oneself personal knowledge of," from Old French acointer "make known; make or seek acquaintance of," from Vulgar Latin *accognitare "to make known," from Latin accognitus "acquainted with," past participle of accognoscere "know well," from ad "to" (see ad-) + cognitus, past participle of cognoscere "come to know" (see cognizance).
Meaning "to inform (someone of something), furnish with knowledge or information" is from 1550s. Related: Acquainted; acquainting.
