| sly(wary, clandestine, underground, guarded, undisclosed) |
| sparing(aloof, reserved, uncommunicative) |
| standoff(adjective, cold, modest, unfriendly, aloof) |
| stiff(adjective, cold, modest, unfriendly, aloof) |
| succinct(adjective, taciturn) |
| surreptitious(clandestine, underground, undisclosed, concealment) |
| suspicious(adjective, restrained, modest, nervous, humble) |
| tongue-tied(still, silent, hushed, uncommunicative, soundless) |
| unaffable(calm, quiet, reasonable, mild, controlled) |
| uncompanionable(adjective, close, quiet, gentle, cold) |
| uneager(adjective, modest, nervous, humble, hesitant) |
| unexpansive(calm, quiet, reasonable, mild, controlled) |
| unwilling(adjective, modest, humble, hesitant, suspicious) |
| wordless(still, hushed, soundless) |
| abashed(adjective, shy, timid, diffident) |
| abstruse(obscure, unknown, clandestine, underground, undisclosed) |
| afraid(adjective, modest, nervous, humble, shy) |
| along for the ride(expression, adjective, idiom, detached, impassive) |
| apathetic(adjective, cool, indifferent, restrained, detached) |
| apprehensive(adjective, modest, nervous, humble, shy) |