なかった ⇒ へんかったNot, Will not, Did not, Has not

Replacing ない, the auxiliary verb in standard Japanese that negates verbs, is へん in 関西弁(かんさいべん). へん conjugates in the same way as ない, meaning that it connects to the conjunctive form of verbs. Like ない, へん may simply be translated as 'to not (A)'.

One of the primary differences to remember between ない and へん is that へん has an unchanging base, while the い in ない gets removed/changed depending on the conjugation type. This can be seen in the (casual) past negative form of verbs using へん.

Caution

へん is a replacement for the auxiliary verb ない, not the い-Adjective ない. This means that へん will not be used when negating い-Adjectives. However, へん may appear as a negative form of ある (written as あらへん). ある does not have a (casual) negative form in standard Japanese.