| ail(verb, upset, break, trouble, get) |
| apprehensiveness(noun, concern, strain, anxiety, burden) |
| be anxious(verb, expression, idiom, avoid, fuss) |
| be concerned(verb, expression, idiom, fuss, fret) |
| botheration(noun, trouble, concern, strain, difficulty) |
| commotion(noun, activity, trouble, bother, excitement) |
| heartache(noun, trouble, passion, concern, distress) |
| heckle(verb, attack, hurt, bother, abuse) |
| jitter(noun, excitement, agitation, fret, unrest) |
| jitters(noun, trouble, concern, excitement, strain) |
| miff(verb, upset, break, trouble, get) |
| nuisance(noun, trouble, concern, blow, strain) |
| pressure(noun, verb, trouble, make, force) |
| puzzle(noun, verb, upset, trouble, bother) |
| responsibility(noun, business, trouble, concern, strain) |
| shake(verb, upset, bother, distress, alarm) |
| stir(noun, activity, upset, trouble, drive) |
| sweat(noun, verb, state, trouble, concern) |
| take on(verb, expression, phrasal verb, trouble, bother) |
| test(verb, fuss, fret, troubled, agonize) |