| bland |
| blunt(adjective, insensitive) |
| demure(adjective, unexcitable) |
| dry(adjective, cool, cold, dead, blank) |
| foolhardy(adjective, reckless) |
| halfhearted(adjective, temper, cold, negative, dead) |
| hard-boiled(adjective, insensitive) |
| hectic(adjective, reckless) |
| imprudent(adjective, casual, reckless, happy-go-lucky, slapdash) |
| inert(adjective, cold, dead, apathy, passive) |
| informal(adjective, cool, mild, relaxed, tolerant) |
| jaunty(adjective, feature, state, trait, cheerful) |
| lax(adjective, feature, state, careless, indifferent) |
| matter-of-fact(adjective, cool, cold, dead, blank) |
| neglectful(adjective, calm, cool, careless, relaxed) |
| nerveless(adjective, calm, cool, steady, unaffected) |
| rash(adjective, reckless) |
| ruthless(adjective, insensitive) |
| self-composed(adjective, unexcitable) |
| staid(adjective, calm, relaxed, tranquil, easygoing) |