mull over

from WordNet (r) 3.0 (2006)

mull over
    v 1: reflect deeply on a subject; "I mulled over the events of
         the afternoon"; "philosophers have speculated on the
         question of God for thousands of years"; "The scientist
         must stop to observe and start to excogitate" [syn: {chew
         over}, {think over}, {meditate}, {ponder}, {excogitate},
         {contemplate}, {muse}, {reflect}, {mull}, {mull over},
         {ruminate}, {speculate}]

from The Collaborative International Dictionary of English v.0.48

mull over \mull over\, v. t.
   To think about; to consider; to ruminate about; as, mull it
   over and decide in the morning. [Colloq. U.S.]
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

22 Moby Thesaurus words for "mull over":
      brood over, chaw, chew over, con over, deliberate, deliberate over,
      deliberate upon, digest, meditate, meditate upon, muse, muse on,
      muse over, ponder over, reflect over, revolve, roll, ruminate,
      ruminate over, run over, think over, turn over

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