| have breakdown(expression, decline, fail, crack, collapse) |
| hunger(verb, break, fail, weaken, suffer) |
| impair(decline, weaken, degenerate, deteriorate, degrade) |
| injure(decline, weaken, degenerate, deteriorate, degrade) |
| keel over(verb, expression, break, drop, give) |
| knock out(verb, expression, break, fail, weaken) |
| labor(trip, slip, struggle, blunder, stumble) |
| lapse(decline, reduce, weaken, degenerate, deteriorate) |
| lessen(decline, reduce, weaken, degenerate, deteriorate) |
| listless(verb, break, fail, weaken, suffer) |
| long(verb, break, fail, weaken, suffer) |
| lose courage |
| lose it(verb, expression, break, decline, yield) |
| lose nerve(expression, scare, become, freak) |
| lose quality(expression, decline, weaken, degenerate, degrade) |
| lose self-control |
| lower(decline, weaken, degenerate, deteriorate, decay) |
| lurch(trip, slip, struggle, stumble, labor) |
| make a mess of(expression, idiom, slip, stumble, flop) |
| mar(decline, weaken, degenerate, deteriorate, degrade) |