Kansai-ben is a major regional dialect of which language?

Japanese

Kansai-ben is spoken in the Kansai region of Japan, particularly in cities like Osaka and Kyoto, and is known for its melodic rhythm and distinct vocabulary. It is famously associated with Japanese comedy, as many of the country's top comedians use this expressive dialect in their routines. One of its most recognizable phrases is 'ookini,' which is used instead of the standard 'arigatou' to say thank you.