| savvy(verb, hold, consider, notice, grasp) |
| scaredy-cat(adjective, uncertain, anxious, nervous, doubtful) |
| sense(verb, appreciate, recognize, identify, distinguish) |
| shaky(adjective, uncertain, anxious, nervous, doubtful) |
| stiff(adjective, uncertain, anxious, nervous, doubtful) |
| suspect(verb, hold, consider, notice, realize) |
| suspicious(adjective, uncertain, anxious, nervous, doubtful) |
| take in(verb, expression, phrasal verb, notice, grasp) |
| think(verb, notice, realize, understand, feel) |
| troubled(adjective, uncertain, anxious, nervous, doubtful) |
| uncertain(adjective, anxious, nervous, doubtful, worried) |
| understand(verb, notice, realize, appreciate, recognize) |
| uneasy(adjective, uncertain, anxious, nervous, doubtful) |
| uptight(adjective, uncertain, anxious, nervous, doubtful) |
| weak(adjective, uncertain, anxious, nervous, doubtful) |
| worried(adjective, uncertain, anxious, nervous, doubtful) |
| worried sick(expression, adjective, uncertain, anxious, nervous) |
| angst-ridden(nervous, worried, uneasy) |
| be aware(verb, appreciate, fathom, apperceive, cognize) |
| be aware of(verb, appreciate, fathom, apperceive, cognize) |