英和和英

語源

From none +‎ the (語源 2), where both words are adverbs. Literally meaning, "not at all".

副詞

none the (comparative more none the, superlative most none the)

1. Having no further or greater of a stated quality than before, used in phrases with comparative adjectives such as worse, better, wiser, etc., and often followed by for.
   • Mahatma Gandhi, The Story of My Experiments with Truth, translated by Mahadev Desai, Part I, chapter v:

     I may mention, however, that I was none the worse for abstaining from exercise. That was because […] , I had formed a habit of taking walks, which has still remained with me. These walks gave me a fairly hardy constitution.

派生語

• nonetheless
• none the wiser

参照

• “none the” in the Collins English Dictionary
• “none the” in Merriam–Webster Online Dictionary.
• “none the better worse etc” (US) / “none the better worse etc” (UK) in Macmillan English Dictionary.