| perplexed(uncertain, hesitant, dubious, unsure) |
| puzzled(uncertain, hesitant, dubious, unsure) |
| questionable |
| reserved(adjective, modest, humble, shy, hesitant) |
| reticent(adjective, modest, nervous, humble, shy) |
| retiring(adjective, modest, humble, shy, hesitant) |
| rootless(adjective, uncertain, nervous, doubtful, shaky) |
| saving(considerate, cautious, prudent, suspicious, watchful) |
| scoffing |
| self-effacing(adjective, modest, nervous, humble, shy) |
| sheepish(adjective, modest, nervous, humble, shy) |
| shrinking(adjective, modest, nervous, humble, shy) |
| skeptic |
| skittish(adjective, modest, nervous, humble, hesitant) |
| sly(considerate, cautious, prudent, suspicious, watchful) |
| sparing(considerate, cautious, prudent, suspicious, watchful) |
| suspicions |
| tentative(uncertain, hesitant, dubious, unsure) |
| theoretical(uncertain, hesitant, dubious, unsure) |
| thinking twice(expression, considerate, cautious, prudent, suspicious) |