| feeble(nervous, shy, fearful) |
| fink(adjective, false, dishonest, deceitful, unreliable) |
| foresworn(fickle, untrustworthy, unprincipled) |
| frightened(nervous, shy, fearful) |
| guileful(adjective, false, dishonest, deceitful, unreliable) |
| hanging by thread(expression, idiom, uncertain, nervous, insecure) |
| having cold feet(expression, idiom, nervous, shy, fearful) |
| in doubt(expression, uncertain, doubtful, unsure) |
| inconsistent(loose, unpredictable, unreliable, variable, irresponsible) |
| indefinite(loose, unpredictable, unreliable, variable, irresponsible) |
| indisposed(adjective, modest, humble, hesitant, suspicious) |
| intimidated(nervous, shy, fearful) |
| lacking confidence(expression, uncertain, self-doubting, unconfident) |
| loath(adjective, modest, humble, hesitant, suspicious) |
| loose(unpredictable, unreliable, variable, irresponsible) |
| lubricious(fickle, untrustworthy, unprincipled) |
| lying(fickle, untrustworthy, unprincipled) |
| mercentary(fickle, untrustworthy, unprincipled) |
| milquetoast(nervous, shy, fearful) |
| moonlighting(fickle, untrustworthy, unprincipled) |