Synonyms|243Antonyms|67|Broader|4Narrower|13Related|213

145 entries under adjective topic. ×

3
at a loss for words(expression, idiom, quiet, affected)
3
confounded(beat, confused, amazed, astonished)
3
cool(informal, astonished, thunderstruck, flabbergasted)
3
dull
3
floored(beat, confused, amazed, astonished)
3
inaudible(close, quiet, soft, obscure)
3
incoherent
3
incredulous(overcome, overwhelmed, surprised, overawed)
3
overwhelmed(beat, overcome, confused, dazed)
3
slow
3
soundless(close, quiet, soft, low)
3
still(adverb, close, quiet, soft)
3
struck dumb
2
buttoned up(expression, close, quiet, soft)
2
clammed up(expression, close, quiet, soft)
2
close-mouthed(close, quiet, soft, low)
2
incommunicative
2
inobtrusive(quiet, soft, low)
1
cool as cucumber(expression, idiom, astonished, thunderstruck)
1
could hear a pin drop(expression, idiom, close, quiet)
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ChicagoSmart Define. 2015. "speechless thesaurus" https://smartdefine.org/speechless/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, speechless thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/speechless/thesaurus/synonyms>.
MLASmart Define. "speechless thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/speechless/thesaurus/synonyms>