Imply
late Middle English: from Old French emplier, from Latin implicare, from in- ‘in’ + plicare ‘to fold’. The original sense was ‘entwine’; in the 16th and 17th centuries the word also meant ‘employ’. Compare with employ and implicate.
wiktionary
From Middle English implien, emplien, borrowed from Old French emplier, from Latin implicare(“to infold, involve”), from in(“in”) + plicare(“to fold”). Doublet of employ and implicate.
etymonline
imply (v.)
late 14c., implien, emplien "to enfold, enwrap, entangle" (the classical Latin sense), from Old French emplier, from Latin implicare "involve, enfold, entangle," from assimilated form of in- "into, in, on, upon" (from PIE root *en "in") + plicare "to fold" (from PIE root *plek- "to plait").
Meaning "to involve something unstated as a logical consequence" first recorded c. 1400; that of "to hint at" is from 1580s. Related: Implied; implying. The distinction between imply and infer is in "What do you imply by that remark?" but, "What am I to infer from that remark?" Or, as Century Dictionary puts it, "An action implies ability or preparation, but involves consequences."
