Meaning : Pass into or through, often by overcoming resistance.
The bullet penetrated her chest.
Synonyms : perforate
Meaning : Enter a group or organization in order to spy on the members.
The student organization was infiltrated by a traitor.
Synonyms : infiltrate
Meaning : Make one's way deeper into or through.
The hikers did not manage to penetrate the dense forest.
Meaning : Insert the penis into the vagina or anus of.
Did the molester penetrate the child?.