| empathic |
| endangered(delicate, uncertain, unsound, dangerous, hazardous) |
| enigmatic(hard, tricky, complicated) |
| equivocal(adjective, delicate, uncertain, awkward, unstable) |
| every which way(expression, careless, unstable, unreasonable, unpredictable) |
| evocative(adjective, kind, gentle, mild, caring) |
| exacting |
| expansive(lively, impulsive, unpredictable, changeable, temperamental) |
| explosive(unstable, unpredictable, unreliable, fickle, insecure) |
| fanciful(careless, unstable, unreasonable, unpredictable, changeable) |
| feeling(adjective, understanding, keen, fine, sensible) |
| finicky(adjective, difficult) |
| fitful(adjective, careless, unstable, unreasonable, impulsive) |
| flaky(careless, lively, unstable, unreasonable, unpredictable) |
| flighty(careless, lively, unstable, unreasonable, changeable) |
| fluctuating(adjective, weak, lively, uncertain, active) |
| fluid(adjective, upset, uncertain, anxious, worried) |
| frail |
| fraught with danger(expression, adjective, idiom, delicate, uncertain) |
| fussy(adjective, difficult) |