| disturb(verb, upset, break, trouble, dull) |
| germ(noun, informal, illness, sickness, beings) |
| illness(noun, disorder, disease, sickness, affliction) |
| needle(verb, upset, break, trouble, get) |
| tap(noun, verb, study, consider, examine) |
| freak(noun, person, concern, slang, informal) |
| get(verb, upset, break, trouble, bother) |
| microbe(noun, informal, illness, sickness, plague) |
| nag(verb, upset, break, trouble, get) |
| pique(verb, upset, get, bother, disturb) |
| tease(verb, upset, trouble, get, attack) |
| aggravate(verb, upset, trouble, bother, disturb) |
| ailment(noun, health, disorder, disease, collapse) |
| chafe(verb, upset, trouble, bother, disturb) |
| enthusiast(noun, concern, interest, informal, nut) |
| fan(noun, concern, informal, nut, supporter) |
| fault(noun, help, mark, weakness, spot) |
| infirmity(noun, disorder, disease, weakness, crack) |
| miff(verb, upset, break, trouble, get) |
| nut(noun, concern, slang, supporter, radical) |