| prim(adjective, thoughtful, sober, cautious, prudent) |
| private(adjective, mysterious, secret, reticent, penetrating) |
| quiet(adjective, moderate, reserved, cautious, conventional) |
| reasonable(adjective, cautious, tactful, circumspect) |
| responsible(adjective, vigilant) |
| rigid |
| sacred(adjective, protected) |
| sagacious(adjective, careful, cautious, prudent, tactful) |
| sedate |
| sensible(adjective, cautious, tactful, circumspect) |
| sharp(adjective, keen, anxious, alert, careful) |
| shrewd(adjective, careful, thoughtful, prudent, wary) |
| shrouded(cover, obscure, dark, secret, hidden) |
| sleepless(keen, anxious, alert, careful, cautious) |
| sly(adjective, cautious, shrewd, suspicious, wary) |
| strict(adjective, vigilant) |
| suspecting(wary, mistrustful, distrustful) |
| sustained(verb, defended) |
| tactful(adjective, careful, vague, cautious, wary) |
| timid(adjective, moderate, delicate, careful, safe) |