| spoil(verb, dull, decline, turn, weaken) |
| putrefy(verb, dull, decline, spoil, weaken) |
| rot(verb, stop, dull, end, decline) |
| decay(verb, stop, dull, end, pass) |
| debauch(verb, ruin, corrupt, feel, emotions) |
| decompose(verb, dull, decline, spoil, weaken) |
| turn(verb, decline, spoil, weaken, lessen) |
| go off(verb, expression, phrasal verb, turn, spoil) |
| moulder |
| corrupt(verb, ruin, feel, decay, emotions) |
| disintegrate(verb, dull, decline, spoil, weaken) |
| fail(verb, stop, end, decline, pass) |
| become rotten |
| deteriorate(verb, stop, end, decline, pass) |
| give way |
| bestialize(verb, ruin, corrupt, feel, emotions) |
| break down(verb, expression, phrasal verb, stop, dull) |
| brutalize(verb, ruin, corrupt, feel, emotions) |
| curdle(verb, dull, decline, turn, spoil) |
| debase(verb, ruin, corrupt, feel, emotions) |