on tenterhooks Antonyms

breezy steady tranquil unruffled unshakable unshaken undisturbed laid-back easygoing happy-go-lucky imperturbable untroubled unflustered unperturbed well-adjusted self-possessed self-contained centered chilled collected equal harmonious impassive mellow nonchalant nonplussed placid poised relaxed relieved self-assured well-balanced