| giddy(adjective, uneven, unbalanced, unhinged, perplexed) |
| halfhearted(adjective, cool, weak, doubtful, hesitant) |
| halting(adjective, weak, shy, doubtful, hesitant) |
| hit-or-miss(adjective, erratic, random, haphazard, chancy) |
| impulsive(adjective, unusual, unstable, chance, original) |
| in question(expression, adjective, idiom, clear, weak) |
| inexplicit(adjective, clear, certain, vague, unclear) |
| introverted(adjective, feel doubt) |
| nervous(adjective, awkward, unstable, worried, stiff) |
| puzzling(dark, vague, mysterious, unclear, tricky) |
| shilly-shallying |
| spineless(adjective, nervous, unstable, hesitant, fearful) |
| sporadic(irregular, unreliable, uneven, variable, erratic) |
| troubled(adjective, upset, anxious, nervous, ill) |
| trustless(adjective, unreliable, insecure, treacherous, incalculable) |
| unassured(adjective, unreliable, insecure, treacherous, incalculable) |
| uneven(adjective, irregular, unpredictable, unreliable, variable) |
| varying(adjective, unstable, irregular, unsettled, unpredictable) |
| amorphous(adjective, rough, vague, unclear, hazy) |
| changing(adjective, upset, weak, anxious, doubtful) |