| obvious |
| on the line(expression, idiom, weak, tender, ready) |
| on the spot(expression, idiom, weak, tender, ready) |
| opened out(verb, expression, phrasal verb) |
| out on a limb(expression, idiom, weak, tender, ready) |
| out on limb(expression, idiom, accessible) |
| piratical |
| poor(implausible, unconvincing) |
| predisposed(apt, likely, prone) |
| prone(adjective, open, weak, sensitive, apt) |
| puerile(poor, implausible, unconvincing) |
| ready(weak, tender, sensitive, susceptible, vulnerable) |
| receptive |
| sitting duck(expression, weak, tender, ready, sensitive) |
| sucker(weak, tender, ready, sensitive, susceptible) |
| tender(weak, ready, sensitive, susceptible, vulnerable) |
| tending(adjective, open, sensitive, apt, likely) |
| tenuous(poor, implausible, unconvincing) |
| trifling(poor, implausible, unconvincing) |
| trivial(poor, implausible, unconvincing) |