abortEnglishOxford English Thesaurusabort verb 1 I decided not to abort the pregnancy: terminate, end; have an abortion. 2 this organism infects sheep and can cause pregnant ewes to abort: miscarry, have a miscarriage. 3 the ‘escape’ key is used to abort the program: halt, stop, end, call off, cut short, discontinue, terminate, arrest, suspend, check, nullify; informal scrub, axe, pull the plug on. ▷antonyms continue, complete. 4 there are times when the mission aborts: fail, come to a halt, end, terminate, miscarry, go wrong, not succeed, fall through, break down, be frustrated, collapse, founder, come to grief, fizzle out, flop. ▷antonyms succeed, complete.abort Oxford Dictionary of English