ponder

[1]

chew over , consider , muse (over/on) , think over , brood (over/upon/on) , meditate , excogitate , mull over , deliberate (over) , contemplate , muse , meditate (upon/on) , think (over/on/about) , reflect , mull , weigh , ruminate (over) , mull over , ruminate , chew over , cogitate , speculate , excogitate , reflect (on/over) , contemplate