| crucial component(expression, reason, importance, significance) |
| deadlock(noun, trouble, change, mess, situation) |
| decisive factor(expression, reason, importance, significance) |
| demandingness(fix, pass, distress, demand, need) |
| determinant factor(expression, reason, importance, significance) |
| development(noun, juncture) |
| difficulty(noun, fix, pass, demand, need) |
| dilemma(noun, trouble, change, fix, pass) |
| dire straits(noun, expression, trouble, change, mess) |
| disaster(noun, trouble, change, mess, situation) |
| distress(noun, fix, pass, difficulty, demand) |
| dominant cause(expression, reason, importance, significance) |
| dominant factor(expression, reason, importance, significance) |
| driving factor(expression, reason, importance, significance) |
| duress(fix, pass, distress, demand, need) |
| embarrassment(noun, trouble, change, difficulty, mess) |
| entanglement(noun, trouble, change, mess, situation) |
| essence |
| essential |
| essential matter |