| cautious(adjective, kind, reasonable, keen, smart) |
| careful(adjective, close, mean, kind, reasonable) |
| watchful(adjective, keen, sharp, smart, bright) |
| alert(adjective, keen, sensible, deliberate, lively) |
| circumspect(adjective, kind, reasonable, keen, sharp) |
| prudent(adjective, action, close, mean, kind) |
| vigilant(adjective, sharp, bright, sensible, deliberate) |
| guarded(adjective, keen, sensible, delicate, deliberate) |
| heedful(adjective, kind, sharp, bright, sensible) |
| chary(adjective, close, mean, sensible, delicate) |
| attentive(adjective, kind, keen, sharp, bright) |
| shy(adjective, quiet, careful, thoughtful, sober) |
| observant(adjective, kind, keen, sharp, bright) |
| leery(adjective, restrained, careful, thoughtful, cautious) |
| suspicious(adjective, delicate, restrained, alert, modest) |
| mistrustful(adjective, cautious, suspicious, watchful, skeptical) |
| canny(adjective, close, mean, kind, smart) |
| distrustful(adjective, modest, humble, careful, doubtful) |
| discreet(adjective, kind, smart, sensible, delicate) |
| wakeful(adjective, keen, alert, careful, restless) |