| questioning(uncertain, nervous, doubtful, worried, hesitant) |
| random shot |
| reluctant(uncertain, doubtful, unsure) |
| risky(adjective, delicate, uncertain, unstable, doubtful) |
| rocky(adjective, delicate, uncertain, unstable, doubtful) |
| rootless(adjective, uncertain, nervous, doubtful, shaky) |
| rugged(adjective, delicate, uncertain, unstable, doubtful) |
| sensitive(adjective, delicate, uncertain, unstable, doubtful) |
| shady(uncertain, doubtful, unsure) |
| shaky(adjective, delicate, uncertain, nervous, unstable) |
| sight-unseen transaction |
| skeptical(adjective, uncertain, nervous, doubtful, hesitant) |
| slippery(adjective, delicate, uncertain, unstable, doubtful) |
| sporting chance |
| square odds |
| standoff |
| suspect(uncertain, doubtful, unsure) |
| suspicious(adjective, uncertain, nervous, doubtful, hesitant) |
| threatening(delicate, uncertain, insecure, rugged, risky) |
| ticklish(adjective, delicate, uncertain, unstable, doubtful) |