predicate

From Middle English predicat(e), from Old French predicat (French prédicat), from Medieval Latin praedicātum (“thing said of a subject, predicate”), substantivized from the nominative neuter singular of praedicātus, the perfect passive participle praedicō (“to proclaim”), see -ate (noun-forming suffix); see also Etymology 2 below.

The adjective was derived from the noun by metanalysis, see -ate (adjective-forming suffix).

From Latin praedicātus, perfect passive participle of praedicō (“to publish, declare, proclaim”) (see -ate (verb-forming suffix)), further from prae- (“before”) + dicō (“to proclaim, dedicate”), related to dīcō (“to say, tell”). Doublet of preach.