| yellow-bellied(adjective, weak, soft, slang, base) |
| diffident(adjective, weak, nervous, shy, worried) |
| fainthearted(weak, nervous, shy, feeble, worried) |
| frightened(adjective, weak, nervous, shy, worried) |
| poltroon |
| apprehensive(adjective, weak, nervous, shy, worried) |
| chicken-livered |
| chickenhearted(adjective, fear, shy, worried, afraid) |
| feeble(adjective, weak, nervous, shy, fearful) |
| nervous(adjective, weak, shy, worried, fearful) |
| retiring(adjective, weak, nervous, shy, fearful) |
| tame(adjective, fearful) |
| weak(adjective, nervous, shy, fearful, spineless) |
| weak-kneed(adjective, weak, soft, base, nervous) |
| anxious(adjective, weak, shy, worried, afraid) |
| bashful(adjective, nervous, shy, fearful) |
| intimidated(adjective, nervous, shy, worried, fearful) |
| spiritless(adjective, weak, nervous, shy, feeble) |
| unassertive(nervous, shy, feeble, fearful, ambivalent) |
| base(weak, spineless, gutless) |