trembling Antonyms

as cool as a cucumber laid-back at peace unagitated zen undisturbed unruffled unmoved unconcerned tranquil together carefree unworried imperturbable unperturbed unflustered unbothered self-controlled unflappable untroubled unfazed unexcitable even-tempered at ease stolid still cool controlled confident composed collected chilled centered calm brave assured cool-headed dispassionate equable steady serene self-possessed sedate relaxed poised placid phlegmatic peaceful impassive aloof