| let in on(expression, idiom) |
| louse up(verb, expression, upset, disturb, shock) |
| low estimation |
| low opinion |
| lower(verb, fail, abandon, sadden, disappoint) |
| marvel(shock, disappointment, wonder, revelation, quickness) |
| mess up(verb, expression, upset, disturb, shock) |
| miracle(shock, disappointment, wonder, revelation, quickness) |
| miscalculation(shock, disappointment, wonder, revelation, quickness) |
| miscarry(verb, upset, fail, deceive, thwart) |
| mislead(verb, upset, fail, deceive, thwart) |
| mortification(noun, defeat, blow, distress, failure) |
| muck up(verb, expression, upset, bother, disturb) |
| mystify(verb, upset, bother, disturb, shock) |
| nonplus(verb, upset, bother, disturb, shock) |
| nonsuccess(noun, defeat, blow, distress, failure) |
| not show(expression, upset, fail, deceive, thwart) |
| objection |
| offend |
| open one's eyes(verb, disenchant) |