(adv) in a manner or to a degree that could not be doubted, Syn. beyond a shadow of a doubt, beyond doubt, beyond a doubt, Example:it was immediately and indubitably apparent that I had interrupted a scene of lovers; his guilt was established beyond a shadow of a doubt
[いよいよ, iyoiyo] (adv) (1) (uk) more and more; all the more; increasingly; (2) at last; finally; beyond doubt; (3) (at the) last moment; worst possible time; (P)