definition of
ponder

[1] #1 ponder v. [chew over, think over, meditate, excogitate, contemplate, muse, reflect, mull, mull over, ruminate, speculate] 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". wn