undoubting

abiding assured certain changeless clear confident constant convinced convincing decided doubtless enduring firm fixed for a fact free from doubt genuine incontestable incontrovertible indisputable indubitable never-failing persuaded positive real satisfied set steadfast steady telling unchangeable unchanging uncompromising undeniable unequivocal unfailing unfaltering unqualified unquestionable unquestioning unshakable unshaken unvarying unwavering valid

absolute accurate certain complete constant constructive contained definite entire firm fixed full implicative implied inarticulate inevitable inferential inferred latent practical steadfast tacit taken for granted total unconditional undeclared understood unexpressed unfaltering unhesitating unqualified unquestioned unquestioning unreserved unsaid unshakable unspoken unuttered virtual wholehearted