tempestuous Antonyms

unperturbed tranquil sunshiny sunny summery still stable smooth serene relaxant relaxed rational quiet unmoved unruffled unbothered untroubled unfazed even-tempered nonviolent unclouded level-headed laid-back unagitated undisturbed warm upwind poised pleasing equable cool-headed cool composed collected cold-blooded cloudless clement clear calm bright balmy fair friendly pleasant placid peaceful peaceable nocturne moderate mild