| even-tempered(calm, composed, unflappable) |
| hebetudinous(adjective, dull, slow, heavy, stupid) |
| laid-back(adjective, calm, dull, quiet, weak) |
| matter-of-fact(adjective, calm, dull, cool, simple) |
| moderate |
| passionless(adjective, calm, cool, indifferent, detached) |
| somnolent(adjective, dull, relaxed, stupid, weary) |
| stuporous(adjective, stupid, idle, unfeeling, numb) |
| tame |
| tardy |
| unanimated |
| unexcitable(adjective, calm, dull, cool, detached) |
| unflappable(adjective, calm, quiet, cool, indifferent) |
| unhurried(adjective, dull, quiet, weak, easy) |
| Laodicean |
| blase(indifferent, detached, distant, apathetic, unfeeling) |
| bored(lethargic, languid, indolent) |
| chill(adjective, restrained, detached, impassive, unemotional) |
| chilly(cool, restrained, unemotional, unenthusiastic, half-hearted) |
| collected(adjective, calm, quiet, cool, relaxed) |