| assured(adjective, calm, cool, firm, steady) |
| at a standstill(expression, adjective, idiom, quiet, cool) |
| becalmed |
| benign |
| bland(adjective, quiet, cool, smooth, soft) |
| blithesome(adjective, feature, state, trait) |
| bloodless(calm, quiet, friendly, serene) |
| bouncy(adjective, feature, state, trait) |
| breathless(adjective, quiet, cool, smooth, mild) |
| breezeless(adjective, quiet, cool, smooth, mild) |
| breezy(adjective, feature, state, trait) |
| bubbly(adjective, feature, state, trait) |
| bucolic(adjective, quiet, cool, smooth, mild) |
| buoyant(adjective, feature, state, trait) |
| buttoned up(expression, adjective, calm, quiet, smooth) |
| callous(adjective, indifferent, nonchalant, undaunted, unworried) |
| calmer |
| cataleptic |
| cheerful(adjective, feature, state, trait) |
| cheery(adjective, feature, state, trait) |