adverb
absolutely; decidedly; positively
Strong emphatic adverb used to state something with firm conviction. Very common in the negative pattern 断じて〜ない, meaning 'absolutely not' or 'by no means'; also possible in strong affirmative assertions.
そのような不正は断じて許されない。
Such wrongdoing is absolutely unacceptable.
私はその案に断じて反対です。
I am firmly opposed to that proposal.