Used adverbially to state that something applies to all cases or members of a group, with no exclusions.
This rule applies to everyone without exception.
He goes jogging every morning without exception.
Standard kanji-kana spelling.
Variant using the kanji 無 for なく; less common but seen in some writing.
Compound of 例外 (exception) + なく (adverbial form of ない, 'not'). Literally 'with no exceptions'.