WALK OUT

{v.} 1. To go on strike. * /When the company would not give them higher pay, the workers walked out./ 2. To leave suddenly; especially to desert. * /He didn't say he wasn't coming back; he just walked out./ - Often used informally with "on". * /The man walked out on his wife and children./ Compare: LEAVE FLAT, LEAVE IN THE LURCH.