prostrate

From Middle English prostrat(e) (“prostrate”, also used as the past participle of prostraten), borrowed from Latin prōstrātus, perfect passive participle of prōsternō (“to prostrate”). Participial usage up until Early Modern English.

From Middle English prostraten (“(reflexive) to prostrate; (with doun) to fall down in a state of humility or submission”), from prostrat(e) (“prostrate, prostrated”, also used as the past participle of prostraten) + -en (verb-forming suffix), from Latin prōstrātus, see -ate (verb-forming suffix) and Etymology 1 for more.