5
taciturn(adjective, quiet, reserved, silent, mute)
5
tongue-tied(adjective, quiet, reserved, silent, mute)
4
mumble(verb, vacillate, dawdle, fumble, hum)
4
mute(adjective, quiet, reserved, silent, speechless)
4
silent(adjective, quiet, reserved, mute, speechless)
4
speechless(adjective, quiet, reserved, silent, mute)
4
wordlessness(noun, calm, quiet, silence, serenity)
3
murmur(verb, vacillate, dawdle, fumble, hum)
3
calm(noun, quiet, silence, serenity, muteness)
3
close-mouthed(adjective, quiet, reserved, silent, mute)
3
untalkative(adjective, quiet, reserved, silent, mute)
2
calmness(noun, calm, quiet, silence, serenity)
2
dawdle(verb, vacillate, fumble, hum, murmur)
2
dull(adjective, slow, sluggish, lazy, inactive)
2
dumbness(noun, calm, quiet, silence, serenity)
2
fumble(verb, vacillate, dawdle, hum, murmur)
2
hum(verb, vacillate, dawdle, fumble, murmur)
2
hush(noun, calm, quiet, silence, serenity)
2
inactive(adjective, dull, slow, sluggish, lazy)
2
lazy(adjective, dull, slow, sluggish, inactive)
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APASmart Define. (1970). speak fast thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/speak_fast/thesaurus/antonyms
ChicagoSmart Define. 1970. "speak fast thesaurus" https://smartdefine.org/speak_fast/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 1970, speak fast thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/speak_fast/thesaurus/antonyms>.
MLASmart Define. "speak fast thesaurus" 1 January 1970. Web. 24 September 2026. <https://smartdefine.org/speak_fast/thesaurus/antonyms>