Synonyms of unhumorous

1 Syllable

set, staid, bound, stern, grim

2 Syllables

earnest, downbeat, solemn, sober, grave, honest, serious, intent, thoughtful, weighty, deadpan, steady

3 Syllables

resolved, sedate, austere, severe, long-faced, funereal, sincere, unsmiling, sobering, pensive, genuine

4 Syllables

reflective, resolute, no-nonsense, pokerfaced, unamusing, determined

5 Syllables

businesslike, contemplative, meditative, deliberate