penetrate in WordNet English dictionary

1. come to understand
   penetrate  fathom  bottom 
   
2. become clear or enter one's consciousness or emotions
   "It dawned on him that she had betrayed him"; "she was penetrated with sorrow"
   click  get through  dawn  come home  get across  sink in  penetrate  fall into place 
   
3. spread or diffuse through
   "An atmosphere of distrust has permeated this administration"; "music penetrated the entire building"; "His campaign was riddled with accusations and personal attacks"
   permeate  pervade  penetrate  interpenetrate  diffuse  imbue  riddle 
   
4. enter a group or organization in order to spy on the members
   "The student organization was infiltrated by a traitor"
   infiltrate  penetrate 
   
5. pass into or through, often by overcoming resistance
   "The bullet penetrated her chest"
   penetrate  perforate 
   
6. insert the penis into the vagina or anus of
   "Did the molester penetrate the child?"
   penetrate 
   
7. make one's way deeper into or through
   "The hikers did not manage to penetrate the dense forest"
   penetrate