imperturbable Synonyms

unflappable stoical stolid temperate as cool as a cucumber together tranquil unaffected unmoved stoic steady staid sober serene self-possessed self-confident self-assured sedate unruffled unshaken undisturbed unperturbed unflustered unemotional self-controlled untroubled unfazed unexcitable even-tempered coolheaded unshockable levelheaded level-headed easygoing laid-back unagitated unimpassioned restful reposeful frightless fiducial even equanimous equable easeful dispassionate disimpassioned disenchanter detached cool-headed