| aware(adjective, keen, alert, careful, cautious) |
| barricaded(noun, verb, adjective, protected, defended) |
| close-mouthed(adjective, reserved, mysterious, private, reticent) |
| conditional(adjective, limited, restricted, conditions, dependent) |
| conscientious(adjective, thoughtful, sober, cautious, prudent) |
| conservative(adjective, moderate, careful, thoughtful, sober) |
| conserved(verb, protected) |
| exacting(adjective, thoughtful, sober, cautious, prudent) |
| fastidious(adjective, delicate, careful, thoughtful, sober) |
| fenced(noun, verb, conditions, walled) |
| fussy(adjective, thoughtful, sober, cautious, prudent) |
| icy |
| intimate(adjective, secret, private, personal, innermost) |
| loath(adjective, cautious, suspicious, wary) |
| maintained(verb, adjective, secure, safe, reserved) |
| meticulous(adjective, careful, thoughtful, sober, prudent) |
| moderate(adjective, cautious, conventional, timid, traditional) |
| modest |
| on one's guard(expression, adjective, idiom, care, caution) |
| particular(adjective, thoughtful, sober, cautious, prudent) |