v. 25B6; verb (poetic/literary)
he forsook his wife : ABANDON, desert, leave, leave high and dry, turn one's back on, cast aside, break (up) with; jilt, strand, leave stranded, leave in the lurch, throw over; informal walk out on, run out on, dump, ditch.
I won't forsake my vegetarian principles : RENOUNCE, abandon, relinquish, dispense with, disclaim, disown, disavow, discard, wash one's hands of; give up, drop, jettison, do away with, axe; informal ditch, scrap, scrub, junk; formal forswear.
keep to, adopt.