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speechless

adjective
 
 
/ˈspiːtʃ.ləs/

Definition

C1 unable to speak because you are so angry, shocked, surprised, etc.: The news left us speechless. She was speechless with indignation.Falling silent and not speaking speechlessly
 
 
/-li/ adverb
Falling silent and not speaking
speechlessness
 
 
/-nəs/ noun [U]
Falling silent and not speaking
(Definition of speechless adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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