| unsuspected problem(expression, difficulty, problem, surprise, sudden) |
| unsuspected trouble(expression, difficulty, problem, surprise, sudden) |
| joker in the pack(expression, idiom, trouble, problem, sudden) |
| joker(noun, expression, idiom, difficulty, problem) |
| unsuspected danger(expression, danger, unexpected, sudden) |
| facer(noun, difficulty, problem, unexpected) |
| hidden danger(expression, difficulty, problem, surprise) |
| hitch(noun, difficulty, challenge, sudden, colloquial) |
| pitfall(noun, trouble, hidden, danger) |
| snag(noun, difficulty, challenge, sudden, colloquial) |
| sudden inconvenience(expression, difficult, surprise, inconvenience) |
| trap(noun, trouble, hidden, danger) |
| unanticipated challenge(expression, difficulty, surprise, unexpected) |
| unanticipated cumber(expression, difficulty, surprise, unexpected) |
| unanticipated inconvenience(expression, difficulty, surprise, unexpected) |
| unexpected cumber(expression, difficult, unexpected, sudden) |
| unexpected inconvenience(expression, difficult, unexpected, sudden) |
| unforseen challenge(expression, difficulty, unexpected, sudden) |
| unforseen cumber(expression, difficulty, sudden, joker) |
| unforseen danger(expression, difficulty, problem, surprise) |