4
pigeon-livered(adjective, calm, quiet, humble, silent)
4
staggered(adjective, beat, confused, amazed, astonished)
4
surprised(adjective, beat, confused, perplexed, befuddled)
3
not saying boo(expression, adjective, idiom, close, quiet)
3
at a loss for words(expression, adjective, idiom, quiet, affected)
3
brief
3
brooding(aloof, reserved, reticent, dour, uncommunicative)
3
brusque
3
confounded(adjective, beat, confused, amazed, astonished)
3
cool(adjective, informal, astonished, thunderstruck, flabbergasted)
3
curt(aloof, reserved, reticent, dour, uncommunicative)
3
dull
3
floored(adjective, beat, confused, amazed, astonished)
3
inaudible(adjective, close, quiet, soft, obscure)
3
incoherent(adjective, quiet)
3
incredulous(adjective, overcome, overwhelmed, surprised, overawed)
3
laconic(aloof, reserved, reticent, uncommunicative)
3
mumbling
3
overwhelmed(adjective, beat, overcome, confused, dazed)
3
slow
11 years ago|7.7k views|share |citing 
APASmart Define. (2015). speechless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/speechless/thesaurus/synonyms
ChicagoSmart Define. 2015. "speechless thesaurus" https://smartdefine.org/speechless/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, speechless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/speechless/thesaurus/synonyms>.
MLASmart Define. "speechless thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/speechless/thesaurus/synonyms>