serious Synonyms

grave sober sedate grievous severe solemn weighty important dangerous earnest good sobering somber sombre sore staid stern stoical substantial substantive taxing pivotal sincere ponderous portentous precarious pressing profound purposeful real reflective responsible rough ruminating ruminative sad scholarly significant significative terrible thoughtful threatening meaningful newsworthy no-nonsense nonindulgent wholehearted down-to-earth unbearable serious-minded