verb (v)

• reflect deeply on a subject(verb.cognition)

  Synonym:
  chew over, contemplate, excogitate, mull, mull over, muse, ponder, reflect, ruminate, speculate, think over
  

  source: wordnet30
• think intently and at length, as for spiritual purposes(verb.cognition)

  Synonym:
  contemplate, study
  

  source: wordnet30
• To keep the mind in a state of contemplation; to dwell on anything in thought; to think seriously; to muse; to cogitate; to reflect.(verb)

  source: webster1913
• To contemplate; to keep the mind fixed upon; to study.(verb)

  source: webster1913