meditate

[1]	reflect , chew over , think over , think , muse , ponder , excogitate , ponder , study , contemplate , muse , ruminate , cogitate , reflect , mull , contemplate , cerebrate , mull over , ruminate , be lost in thought , be in a brown study , speculate
[2]	study , meditate on/upon , consider , contemplate , contemplate , mull over , reflect on/upon , ponder on/over , chew over , plan , scheme , devise , design , conceive , frame , think up , have in mind