Pretend
late Middle English: from Latin praetendere ‘stretch forth, claim’, from prae ‘before’ + tendere ‘stretch’. The adjective dates from the early 20th century.
wiktionary
From Anglo-Norman pretendre, Middle French pretendre (French prétendre(“to claim, demand”)), from Latin praetendere, present active infinitive of praetendō(“ put forward, hold out, pretend”), from prae-(“ pre-”) + tendō(“ stretch”); see tend.
etymonline
pretend (v.)
late 14c., pretenden, "to profess, put forward as a statement or assertion, maintain" (a claim, etc.), "to direct (one's) efforts," from Old French pretendre "to lay claim," from Latin praetendere "stretch in front, spread before, put forward; put forward as an excuse, allege," from prae "before" (see pre-) + tendere "to stretch" (from PIE root *ten- "to stretch").
Main modern sense of "feign, use as a pretext, put forward a false claim" is recorded from c. 1400; the older sense of simply "lay claim to" is behind the royal pretenders (1690s) in English history (see pretender). Meaning "to play, make believe" is recorded from 1865. In 17c. pretend also could mean "make a suit of marriage for," from a sense in French. Related: Pretended; pretending.
pretend (n.)
"act or fact of pretending in imagination or play," 1888, from children's talk, from pretend (v.). Earlier in same sense was the verbal noun pretending (1640s).
