Top Definition
An adjective, usually used to describe a person of somewhat advanced years, who is disagreeable to deal with, but has excellent, provocative chat, or banter.
Dave: Saw Frank today in the supermarket. The miserable bugger's convinced we should house all homeless people in jail and let them eat the prisoners.

Boris: Yeah, he's a bantankerous old git, isn't he?!
by The Noceros February 20, 2010
Someone who goes to far with aggressive banter.
David began to roast James beyond belief. He was in quite the bantankerous mood
by E-Dog H June 06, 2016
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