| fix(noun, trouble, difficulty, pain, struggle) |
| fly in the ointment(noun, expression, idiom, trouble, difficulty) |
| foot dragging(noun, expression, difficulty, obstacle, obstruction) |
| frustration(noun, trouble, difficulty, pain, struggle) |
| glitch(noun, control, check, difficulty, limit) |
| grain of salt(expression, idiom, control, check, limit) |
| gridlock(noun, block, difficulty, obstacle, obstruction) |
| hang up |
| hardship(noun, trouble, difficulty, weakness, bar) |
| hold-up(trouble, delay, blow, difficulty, hindrance) |
| holdup(noun, delay, difficulty, weakness, burden) |
| hot water(noun, expression, trouble, difficulty, pain) |
| impasse(noun, trouble, draw, difficulty, pain) |
| impedance(noun, difficulty, obstacle, obstruction, impediment) |
| imperfection(noun, trouble, difficulty, weakness, bar) |
| inconvenience(noun, trouble, difficulty, weakness, bar) |
| inhibition(control, check, limit, weakness, burden) |
| interference(noun, block, difficulty, restraint, hindrance) |
| interruption(noun, difficulty, restraint, hindrance, problem) |
| intervention(noun, difficulty, obstacle, obstruction, impediment) |