Antonyms of adj tremulous

1 sense of tremulous

Sense 1
quavering, tremulous -- ((of the voice) quivering as from weakness or fear; "the old lady's quavering voice"; "spoke timidly in a tremulous voice")

INDIRECT (VIA unsteady) -> steady -- (not subject to change or variation especially in behavior; "a steady beat"; "a steady job"; "a steady breeze"; "a steady increase"; "a good steady ballplayer")

Similarity of adj tremulous

1 sense of tremulous

Sense 1
quavering, tremulous -- ((of the voice) quivering as from weakness or fear; "the old lady's quavering voice"; "spoke timidly in a tremulous voice")
       => unsteady (vs. steady) -- (subject to change or variation; "her unsteady walk"; "his hand was unsteady as he poured the wine"; "an unsteady voice")