Antonyms of adj vociferous

1 sense of vociferous

Sense 1
blatant, clamant, clamorous, strident, vociferous -- (conspicuously and offensively loud; given to vehement outcry; "blatant radios"; "a clamorous uproar"; "strident demands"; "a vociferous mob")

INDIRECT (VIA noisy) -> quiet -- (free of noise or uproar; or making little if any sound; "a quiet audience at the concert"; "the room was dark and quiet")

Similarity of adj vociferous

1 sense of vociferous

Sense 1
blatant, clamant, clamorous, strident, vociferous -- (conspicuously and offensively loud; given to vehement outcry; "blatant radios"; "a clamorous uproar"; "strident demands"; "a vociferous mob")
       => noisy (vs. quiet) -- (full of or characterized by loud and nonmusical sounds; "a noisy cafeteria"; "a small noisy dog")