| indisputable |
| indrawn |
| indubitable |
| inobtrusive(calm, quiet, reasonable, mild, controlled) |
| insensitive(adjective, detached, impassive, unresponsive, laid-back) |
| lacking interest |
| laid-back(adjective, calm, quiet, reasonable, mild) |
| laid back(verb, expression, adjective, phrasal verb, cool) |
| listless(adjective, calm, dull, flat, detached) |
| marble(adjective, detached, impassive, unresponsive, laid-back) |
| matter-of-fact(adjective, calm, cool, detached, unfriendly) |
| meek(adjective, modest) |
| mild(calm, quiet, reasonable, gentle, aloof) |
| moderate(calm, quiet, reasonable, mild, controlled) |
| muted(calm, quiet, reasonable, mild, controlled) |
| nonemotional(adjective, cool, detached, blank, sober) |
| nongregarious(adjective, quiet, restrained, shy, thoughtful) |
| not responsive(expression, adjective, detached, impassive, unresponsive) |
| nowhere(adjective, cool, detached, blank, sober) |
| obdurate(adjective, detached, impassive, unresponsive, laid-back) |