| flaw(noun, difficulty, slip, weakness, informal) |
| malfunction(noun, difficulty, informal, failure, fault) |
| snag(noun, delay, difficulty, fault, hindrance) |
| hitch(noun, difficulty, informal, fault, hindrance) |
| problem(noun, delay, difficulty, weakness, fault) |
| defect(noun, difficulty, weakness, failure, fault) |
| blip(noun, difficulty, shock, fault, problem) |
| fault(noun, difficulty, slip, weakness, failure) |
| setback(noun, delay, difficulty, fault, hindrance) |
| mishap(noun, difficulty, fault, error, problem) |
| misfire(noun, difficulty, fault, error, problem) |
| something wrong(noun, expression, difficulty, fault, error) |
| error(noun, wrong, difficulty, slip, weakness) |
| difficulty(noun, delay, fault, hindrance, problem) |
| interruption(noun, difficulty, fault, problem, flaw) |
| gremlin(noun, difficulty, weakness, crack, failure) |
| snafu(noun, delay, difficulty, fault, error) |
| computer glitch(noun, expression, difficulty, fault, problem) |
| kink(noun, difficulty, weakness, crack, fault) |
| fly in the ointment(noun, expression, difficulty, fault, problem) |