Synonyms of unflustered

1 Syllable
cool, still, quiet, hushed
2 Syllables
halcyon, tranquil, placid, steady
3 Syllables
unflurried, unstirred, unworried, serene, unruffled, untroubled, unvexed, composed
4 Syllables
undisturbed, unperturbed, unflappable, unconcerned
5 Syllables
unagitated