| taciturn(adjective, close, quiet, gentle, mild) |
| tranquil |
| unaffable(calm, quiet, reasonable, mild, reticent) |
| unaffected(adjective, detached, blank, impassive, unemotional) |
| unenthusiastic(adjective, cool, indifferent, restrained, unfriendly) |
| unexpansive(calm, quiet, reasonable, mild, reticent) |
| unforthcoming(adjective, quiet, restrained, detached, thoughtful) |
| unimpassioned(adjective, cool, detached, unfriendly, blank) |
| unobtrusive(adjective, calm, quiet, reasonable, mild) |
| unsociable(adjective, quiet, cool, indifferent, restrained) |
| unsympathetic(adjective, cool, detached, unfriendly, aloof) |
| actual |
| along for the ride(expression, adjective, idiom, calm, dull) |
| antisocial |
| blah(adjective, calm, dull, flat, detached) |
| bottled up(expression, calm, quiet, reasonable, mild) |
| callous(adjective, detached, unfriendly, impassive, unemotional) |
| calm and collected(expression, calm, quiet, reasonable, mild) |
| cold-hearted |
| cold fish(expression, adjective, cool, detached, blank) |