staid Synonyms

sedate grave composed sober steady straight stiff steadfast starchy somber solemn serious serene sensible strait-laced stuffy uncomic sobersided unsmiling po-faced serious-minded imperturbable no-nonsense weighty tranquil thoughtful temperate cold sober respectable formal earnest dispassionate dignified demure decorous cool conventional collected ceremonious calm grim heavy reserved regular quiet prosaic proper prim priggish poised