uses ones head (verb) ruminate: think about seriously
Sinonime: brainstorm*,
brood, chew over,
cogitate,
consider,
contemplate,
deliberate,
excogitate,
figure,
meditate, mull over,
muse,
ponder, rack one's brains,
reflect,
revolve, stew about,
think, turn over, use one's head, weigh
Antonime: ignore,
neglect