| unreliable(adjective, delicate, passionate, uncertainty, uncertain) |
| unsettled(adjective, upset, weak, delicate, uncertain) |
| abstruse(hard, tricky, complicated) |
| acute(adjective, understanding, keen, fine, sensible) |
| demanding(adjective, difficult) |
| hypersensitive(adjective, understanding, keen, fine, sensible) |
| iffy(noun, adjective, delicate, uncertain, sensitive) |
| inconsistent(adjective, change, continue, unstable, unreliable) |
| insecure(adjective, upset, delicate, uncertain, anxious) |
| rough(adjective, difficult) |
| strenuous(adjective, difficult) |
| unsafe(adjective, delicate, uncertain, sensitive, unstable) |
| erratic(adjective, change, continue, passionate, careless) |
| irritable(adjective, understanding, keen, fine, sensible) |
| mutable(adjective, upset, careless, uncertain, anxious) |
| on slippery ground(expression, adjective, idiom, delicate, uncertain) |
| onerous(adjective, difficult) |
| questionable(adjective, uncertainty) |
| responsive(adjective, understanding, kind, keen, fine) |
| tetchy(sensitive, prickly, quick-tempered) |