verb (v)

• pass into or through, often by overcoming resistance(verb.contact)

  Example:
  The bullet penetrated her chest.
  

  Synonym:
  perforate
  

  source: wordnet30
• come to understand(verb.cognition)

  Synonym:
  bottom, fathom
  

  source: wordnet30
• become clear or enter one's consciousness or emotions(verb.cognition)

  Example:
  She was penetrated with sorrow.
  

  Synonym:
  click, come home, dawn, fall into place, get across, get through, sink in
  

  source: wordnet30
• enter a group or organization in order to spy on the members(verb.social)

  Synonym:
  infiltrate
  

  source: wordnet30
• make one's way deeper into or through(verb.motion)

  Example:
  The hikers did not manage to penetrate the dense forest.
  

  source: wordnet30
• insert the penis into the vagina or anus of(verb.contact)

  Example:
  Did the molester penetrate the child?.
  

  source: wordnet30
• spread or diffuse through(verb.contact)

  Example:
  Music penetrated the entire building.
  

  Synonym:
  diffuse, imbue, interpenetrate, permeate, pervade, riddle
  

  source: wordnet30
• To enter into; to make way into the interior of; to effect an entrance into; to pierce; as, light penetrates darkness.(verb)

  source: webster1913
• To pass; to make way; to pierce. Also used figuratively.(verb)

  source: webster1913