| doubtful(adjective, uncertain, anxious, nervous, worried) |
| fearful(adjective, uncertain, anxious, nervous, doubtful) |
| feel in bones(expression, idiom, uncertain, anxious, nervous) |
| foreboding(adjective, uncertain, anxious, nervous, doubtful) |
| fraid-cat |
| fraidy-cat |
| frozen(adjective, uncertain, anxious, nervous, doubtful) |
| get vibes(expression, adjective, uncertain, anxious, nervous) |
| have a hunch(expression, idiom, uncertain, anxious, nervous) |
| have cold feet(expression, idiom, uncertain, anxious, nervous) |
| have funny feeling(expression, idiom, uncertain, anxious, nervous) |
| have stage fright(expression, idiom, uncertain, anxious, nervous) |
| hung up(expression, adjective, uncertain, anxious, nervous) |
| in a cold sweat(expression, idiom, uncertain, anxious, nervous) |
| in a dither(expression, idiom, uncertain, anxious, nervous) |
| in a sweat(expression, idiom, uncertain, anxious, nervous) |
| invertebrate |
| jittery(adjective, uncertain, anxious, nervous, doubtful) |
| jumpy(adjective, uncertain, anxious, nervous, doubtful) |
| lily-livered(adjective, uncertain, anxious, nervous, doubtful) |