demonstrate evidence show establish rise shew raise testify test attest try substantiate essay verify confirm examine law jurisprudence proof be authenticate certify leaven affirm evaluate negate presume adduce sustain impress corroborate believe determine find considered claim make justify validate convince manifest ensue inform control grow lift result maths judge mathematics math elevate contradict float support print cite proving proves doubt determined proved impossible certainly finding ultimately proven yet indeed neither reason difficult fact unfortunately unlikely any stultify nor necessarily obviously whether nothing might anything not obvious possibility aware perhaps possible convinced seems whatever because clearly testimony reasons something knowing indication