Synonyms of unsmiling

1 Syllable

set, staid, bound, stern, grim

2 Syllables

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

3 Syllables

resolved, sedate, austere, severe, severest, long-faced, funereal, sincere, grim-faced, severer, pensive, genuine

4 Syllables

reflective, resolute, iron-handed, no-nonsense, pokerfaced, unhumorous, determined

5 Syllables

businesslike, contemplative, meditative, deliberate