Word Study
straight faced
THESAURUS
straight faced
decorous, demure, earnest, formal, frowning, grave, grim, grim-faced, grim-visaged, long-faced, sedate, serious, sober, sober-minded, sobersided, solemn, somber, staid, stone-faced, thoughtful, unsmiling, weightyFor further exploring for "straight faced" in Webster Dictionary Online