speechless
Definitions
Unable to speak, especially as the result of strong emotion or shock.
Not expressed in spoken words; silent.
Examples
She was left speechless by the unexpected news of her promotion.
The breathtaking view of the mountains left the entire group speechless.
Synonyms
dumbfounded tongue-tied inarticulate flabbergasted mute stunned breathless
Antonyms
articulate loquacious talkative vocal communicative chatty expressive