Meaning of “penetrating” - Learner’s Dictionary

penetrating

adjective uk us /ˈpenɪtreɪtɪŋ/
INTELLIGENT

intelligent and full of careful thought:

a penetrating discussion/mind
She wrote a penetrating analysis of Shakespeare's Hamlet.
a penetrating gaze/look/stare, etc

If someone gives you a penetrating look, you feel as if they know what you are thinking.

STRONG

If a sound is penetrating, it is very strong and unpleasant:

a penetrating voice/scream

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