| timid(adjective, quiet, simple, moderate, uncertain) |
| shy(adjective, quiet, modest, nervous, meek) |
| insecure(adjective, uncertain, nervous, doubtful, worried) |
| undependable(adjective, uncertain, nervous, dishonest, doubtful) |
| untrustworthy(adjective, uncertain, nervous, dishonest, doubtful) |
| dubious(adjective, uncertain, nervous, dishonest, doubtful) |
| fickle(adjective, dishonest, deceitful, unpredictable, unreliable) |
| unsure(adjective, uncertain, nervous, dishonest, doubtful) |
| demure(adjective, quiet, modest, nervous, humble) |
| diffident(adjective, quiet, uncertain, modest, shy) |
| modest(adjective, quiet, gentle, nervous, humble) |
| uncertain(adjective, unreliable, insecure, treacherous, incalculable) |
| unreliable(adjective, uncertain, nervous, dishonest, doubtful) |
| fair-weather(adjective, dishonest, deceitful, unreliable, fickle) |
| faithless(adjective, dishonest, deceitful, unreliable, fickle) |
| fly-by-night(adjective, uncertain, nervous, dishonest, doubtful) |
| iffy(adjective, uncertain, nervous, doubtful, dubious) |
| irresponsible(adjective, dishonest, deceitful, unpredictable, unreliable) |
| precarious(adjective, unreliable, insecure, treacherous, incalculable) |
| questionable(adjective, uncertain, dishonest, doubtful, deceitful) |