| Herculean task(expression, trouble, concern, strain, weight) |
| accountability(trouble, concern, strain, weight, load) |
| act of God(noun, expression, idiom, ruin, catastrophe) |
| agony(noun, adversity) |
| albatross(trouble, concern, strain, weight, load) |
| anxiety(trouble, concern, strain, weight, disaster) |
| backset |
| bad break(expression, difficulty, disaster, trial, hardship) |
| bad job(expression, idiom, evil) |
| bad news(expression, ruin, disaster, trial, catastrophe) |
| blame(trouble, concern, strain, weight, load) |
| blooper(noun, mistake) |
| bolt from the blue(noun, expression, idiom, upset, blow) |
| boo boo(noun, mistake) |
| breakdown(noun, collapse) |
| bummer(noun, trouble, defeat, blow, difficulty) |
| bust(noun, trouble, ruin, defeat, blow) |
| care(trouble, concern, strain, weight, load) |
| catch(noun, difficulty, holdup, snag, drawback) |
| chance(noun, action, act, blow, thing) |