a.
Calm, composed, collected, quiet, placid, serene, tranquil, still, unruffled, undisturbed, settled, imperturbable, sober, serious, staid, demure, cool, philosophical, contemplative, grave, thoughtful.
a.
Calm, composed, collected, quiet, placid, serene, tranquil, still, unruffled, undisturbed, settled, imperturbable, sober, serious, staid, demure, cool, philosophical, contemplative, grave, thoughtful.
Soule. Dictionary of English synonyms. Словарь английских синонимов. 2012