word-forming element meaning "before," from Old French pre- and Medieval Latin pre-, both from Latin prae (adverb and preposition) "before in time or place," from PIE *peri- (source also of Oscan prai, Umbrian pre, Sanskrit pare "thereupon," Greek parai "at," Gaulish are- "at, before," Lithuanian prie "at," Old Church Slavonic pri "at," Gothic faura, Old English fore "before"), extended form of root *per- (1) "forward," hence "beyond, in front of, before."
The Latin word was active in forming verbs. Also see prae-. Sometimes in Middle English muddled with words in pro- or per-.
early 15c., "dealing with words" (especially in contrast to things or realities), from Old French verbal (14c.) and directly from Late Latin verbalis "consisting of words, relating to verbs," from Latin verbum "word" (see verb). Related: Verbally. Verbal conditioning is recorded from 1954. Colloquial verbal diarrhea is recorded from 1823. A verbal noun is a noun derived from a verb and sharing in its senses and constructions.
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Harper, D. (n.d.). Etymology of preverbal. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/preverbal