Synonyms and Antonyms of tranquil
- the house was once again tranquil after the kids moved outside to play
boisterous, clamorous, clattery, deafening, loud, noisy, raucous, rip-roaring, roistering, romping, rowdy, tumultuous, unquiet, uproarious, woolly (also wooly)
- though she should have been upset, she felt oddly tranquil upon learning that she would not be receiving the scholarship
even, even-keeled, steady, well-adjusted, well-balanced
imperturbable, nerveless, unflappable, unshakable
centered, disciplined, equable, self-contained, self-controlled
affable, breezy, devil-may-care, easygoing, happy-go-lucky, laid-back, loosey-goosey, mellow
carefree, nonchalant, unconcerned
assured, confident, self-assured
aloof, detached, dispassionate, indifferent
bovine, impassive, phlegmatic, sober, stolid
relaxed, relieved, tranquilized (also tranquillized)