Synonyms of unflappable

1 Syllable

set, stoic

2 Syllables

well-set, speechless, constant, cold-fish, easy

3 Syllables

sedate, nonchalant, cool-headed, serene, relaxed, unruffled, untroubled, collected, controlled, iceberg, equable, passive, coolheaded, composed

4 Syllables

monophonic, unflustered, unshakable, unfaltering, unwavering, impassive, levelheaded, unexcited, self-possessed, monochrome, nonresistant, level-headed

5 Syllables

unagitated, unimpressible, disimpassioned, dispassionate, imperturbable, inexcitable, unperturbable, deliberate