The standard Japanese sentence ending か(な), used in questions and strong negatives, may become かい(な) in Kansai-ben. かいな is also used as in back-channel? communication (aizuchi) and imperatives.
In Kansai-ben, ちゃう can be used when negating nouns, originally deriving from ちがう.
Nやない, which corresponds to the standard Nで(は)ない, can be used the same way, but is less common than N?(と)ちゃう.
The Vへん verb ending may be the single most distinctive and recognizable piece of grammar in Kansai-ben. It is the plain non-past negative verb conjugation, analogous to Vない in standard Japanese. In addition, there is also a shortened form: Vん. Thus, standard Japanese's 行かない could be rendered as 行かへん or 行かん in Kansai-ben.
There are a variety of verb negations within the umbrella of Kansai-ben that use these two basic verb negations as a base, with variations depending on region or speaker preference.