adj. 确信的,确实的;有把握的;无疑的;一定的;
adv. 当然;确实地;无疑地;
"Make sure the shelf is aligned with the top of the cupboard."
务必使搁架与橱柜顶端对齐。
近义:inarguable, incontestable, incontrovertible, indefectible, indisputable, indubitable
反义:hesitant, hesitative, imprecise, improbable, inconclusive, indecisive