spec(보다)+ful(가득한)+ate ☞이것저것 보고 모든것을 채워서 생각하는 행동 →사색하다, 곰곰히 생각하다 ex)It is useless to speculate why she did it. speculation 사색, 심사숙고 ex)His private life is the subject of much speculation. speculative 추측에 근거한, 사색적인, 투기의 ex)He bought a house as a speculative investment.