expression
obviously; needless to say; it goes without saying
Used to introduce a statement that is obvious or universally accepted. Often appears at the beginning of a sentence or clause.
言うまでもなく、健康は大切だ。
Needless to say, health is important.
言うまでもなく、彼はその仕事に最適な人材だ。
Obviously, he is the best person for the job.
Rare variant combining 迄 and 無.
From the phrase 言う (to say) + までも (even until) + なく (without), literally 'without even needing to say'. The expression became fixed as an adverbial phrase meaning 'obviously' or 'needless to say'.