| enervated(adjective, dull, bland) |
| equivocal |
| fickle(adjective, weak, indecisive, vacillating) |
| flavorless(adjective, dull, weak, plain, mild) |
| fluctuating(adjective, weak, indecisive, vacillating) |
| frail(adjective, weak, infirm, fragile, helpless) |
| gutless |
| ineffectual(adjective, dull, light, weak, soft) |
| mild(adjective, dull, quiet, weak, soft) |
| sapless(adjective, dull, weak, plain, mild) |
| spiritless(adjective, dull, quiet, weak, gentle) |
| stale(adjective, dull, stupid, ordinary, boring) |
| undependable(adjective, uncertain, nervous, unstable, hesitant) |
| unreliable(adjective, uncertain, nervous, unstable, hesitant) |
| unsettled(open, weak, uncertain, doubtful, vague) |
| unsteady(adjective, weak, indecisive, vacillating) |
| unsure(adjective, open, weak, uncertain, unstable) |
| vague(open, hesitant, pale, drab, unsure) |
| changeful |
| easygoing |