direction to printer to disregard correction made to text, 1755, from Latin stet "let it stand," third person singular present subjunctive of stare "to stand, stand upright, be stiff" (from PIE root *sta- "to stand, make or be firm").
early 15c., assisten, "to help, aid, give assistance or support to in some undertaking or effort," from Old French assister "to stand by, help, put, place, assist" (14c.), from Latin assistere "stand by, take a stand near, attend," from assimilated form of ad "to" (see ad-) + sistere "stand still, take a stand; to set, place, cause to stand," from PIE *si-st-, reduplicated form of root *sta- "to stand, make or be firm." Related: Assisted; assisting. Medical assisted suicide attested from 1884.
Of things, "remain in place," 1590s. Stay put is first recorded 1843, American English. "To stay put is to keep still, remain in order. A vulgar expression" [Bartlett]. Phrase stay the course is originally (1885) in reference to horses holding out till the end of a race. Stay-stomach was (1800) "a snack."
late 14c., resisten, of persons, "withstand (someone), oppose;" of things, "stop or hinder (a moving body);" from Old French resister "hold out against" (14c.) and directly from Latin resistere "to make a stand against, oppose; to stand back; withstand," from re- "against" (see re-) + sistere "take a stand, stand firm" (from PIE root *sta- "to stand, make or be firm"). Of attacks, invasions, etc., 1530s. Related: Resisted; resisting.