Synonyms: 1.proper, serious, decorous, solemn. Staid,sedate,settled indicate a sober and composed type of conduct. Staid indicates an ingrained seriousness and propriety that shows itself in complete decorum; a colorless kind of correctness is indicated: a staid and uninteresting family. Sedate applies to one who is noticeably quiet, composed, and sober in conduct: a sedate and dignified young man. One who is settled has become fixed, esp. in a sober or determined way, in manner, judgments, or mode of life: He is young to be so settled in his ways.
[steyd] 
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