Meaning : Pass into or through, often by overcoming resistance.
Example :
The bullet penetrated her chest.
Synonyms : perforate
Meaning : Become clear or enter one's consciousness or emotions.
Example :
It dawned on him that she had betrayed him.
She was penetrated with sorrow.
Synonyms : click, come home, dawn, fall into place, get across, get through, sink in
Meaning : Enter a group or organization in order to spy on the members.
Example :
The student organization was infiltrated by a traitor.
Synonyms : infiltrate
Meaning : Make one's way deeper into or through.
Example :
The hikers did not manage to penetrate the dense forest.
Meaning : Insert the penis into the vagina or anus of.
Example :
Did the molester penetrate the child?.