| mildew(decline, weaken, lessen, degenerate, deteriorate) |
| mold(decline, weaken, lessen, degenerate, deteriorate) |
| molder(decline, weaken, lessen, degenerate, deteriorate) |
| nonplus(verb, upset, trouble, bother, disturb) |
| overwhelm(verb, dull, overcome, suppress, shock) |
| quash(verb, destroy, overcome, suppress, subdue) |
| rankle(verb, annoy, irritate, irk) |
| rebuff(verb, disregard, slight, ignore, neglect) |
| repress |
| show |
| trouble(noun, verb, upset, dull, reduce) |
| turn(verb, decline, weaken, lessen, degenerate) |
| aggravate(verb, annoy, irritate, irk) |
| be impaired(decline, weaken, lessen, degenerate, deteriorate) |
| become contaminated(expression, decline, weaken, lessen, degenerate) |
| blight(verb, decline, weaken, lessen, degenerate) |
| bug(verb, upset, trouble, dull, reduce) |
| castigate |
| chill(verb, upset, trouble, dull, cut) |
| collapse(decline, weaken, lessen, degenerate, deteriorate) |