～ても～なくても

～ても～なくても says the outcome is the same whether or not something happens: "whether or not ~". The same word appears twice, first with ても and then in the negative with なくても.

The second half is the ない-form with ない changed to なくても: 行かない → 行かなくても.

• × 行っても行かないでも → 行っても行かなくても

The main clause says that nothing changes: おなじ同じ, かんけいない関係ない, かまわない構わない, or a plan that goes ahead anyway.

Adjectives and nouns

An い-adjective goes 〜くても〜くなくても. A noun or な-adjective goes 〜でも〜でなくても, or 〜じゃなくても in speech.

Usage notes

These go beyond the full two-part form.

あってもなくても

The negative of ある is ない, so "whether there is or not" is あってもなくても.

A shorter second half

With a する-verb, the second half can drop the noun and keep only しなくても.

にかかわらず in writing

Notices and formal writing put the dictionary form and the ない-form side by side before にかかわらず.