| open to attack(expression, idiom, vulnerable, insecure, unprotected) |
| out on a limb(expression, adjective, idiom, weak, subject) |
| perilous(vulnerable, unprotected, unguarded) |
| persuadable(adjective, subject, vulnerable, inclined, liable) |
| precarious(vulnerable, unprotected, unguarded) |
| predisposed(adjective, subject, vulnerable, inclined, liable) |
| prone(adjective, subject, vulnerable, inclined, liable) |
| pushover(adjective, subject, vulnerable, inclined, liable) |
| rare |
| ready(adjective, weak, subject, susceptible, vulnerable) |
| receptive(adjective, subject, vulnerable, inclined, liable) |
| responsive(adjective, subject, vulnerable, inclined, liable) |
| rickety(vulnerable, unprotected, unguarded) |
| riding on it |
| risked |
| rocky(vulnerable, unprotected, unguarded) |
| rootless(vulnerable, unprotected, unguarded) |
| roused(adjective, subject, vulnerable, inclined, liable) |
| scarce(adjective, rare) |
| sensible(adjective, subject, vulnerable, inclined, liable) |