| irresponsible(adjective, unstable, unsettled, unpredictable, unreliable) |
| mysterious(adjective, dark, doubtful, vague, dubious) |
| problematical(adjective, clear, certain, doubtful, dubious) |
| random(adjective, uncertainty, chance, unpredictable, changeable) |
| touchy(adjective, difficult, delicate, passionate, nervous) |
| casual(adjective, uncertainty, chance, vague, erratic) |
| controversial(noun, adjective, doubtful, unsettled, vague) |
| delicate(adjective, difficult, sensitive, unstable, ill) |
| diffident(adjective, awkward, nervous, doubtful, hesitant) |
| enigmatic(adjective, obscure, rough, difficult, doubtful) |
| faltering(adjective, weak, doubtful, unsettled, hesitant) |
| fluctuating(adjective, weak, unstable, irregular, doubtful) |
| open(adjective, certain, nervous, unstable, doubtful) |
| rocky(adjective, weak, delicate, anxious, sensitive) |
| sensitive(adjective, weak, delicate, passionate, unstable) |
| shifting(adjective, upset, anxious, unstable, irregular) |
| timid(adjective, weak, hesitant, cautious, indecisive) |
| undefined(adjective, doubtful, vague, dubious, unknown) |
| uneasy(adjective, upset, anxious, awkward, nervous) |
| unsound(adjective, delicate, loose, sensitive, feeble) |