Meaning of “mute” - Learner’s Dictionary

mute

adjective uk us /mjuːt/
THOUGHT

expressed in thoughts but not in speech or writing:

The president has remained mute about whether he will resign.
I gazed at her in mute admiration.
NOT SPEAKING

unable to speak for physical or mental reasons:

a school for deaf and mute children

(Definition of “mute” from the Cambridge Learner’s Dictionary © Cambridge University Press)