treasonously in English dictionary treasonously Meanings and definitions of "treasonously" In a treasonous manner, or to a treasonous degree adverb In a treasonous manner, or to a treasonous degree more Grammar and declension of treasonously treasonously ( comparative more treasonously, superlative most treasonously) treasonously (comparative more treasonously, superlative most treasonously) more Treasonously Sample sentences with "treasonously" Declension Stem Try again Available translations Arabic German Authors