Highly irritating word used by "people of a certain class" to describe the act of talking to someone who isn't a complete moron and can reciprocate said act. The word is one of about fifteen or so (for instance, "physically", "actually" and "grim") that are used excessively in conversations that do not call for their presence. To use the word "banter" to describe talking to someone, or, worse still, to use it proactively (see below) is a crime of speech and should garnish you a mother-fucker of a kick arse from all those around you who recognise you for the nob you are.
Descriptively: "Yeah, we had a great time last night - sank a few pints and had a bit o' banter..."

Proactively: "Let's go out tonight, sink a few pints and have a bit o' banter!" (note the elevated excitement in the proactive usage, indicated by the exclamation mark)
by Zaarin April 25, 2007
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playfully insulting somebody, who will not take you seriously.
You complete twat ;) :P
by donnald duck June 4, 2005
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An exclamation intended to commemorate the occurence of a witty, jovially insulting, hilarously harsh or awkward comment, as well as lubricating the passage of conversation so as to facilitate further banter in the near future. It is most effectively used as a stand-alone catchphrase or vocal tool to break the awkward silence, indicate your approval of the previous comment or assert your position as the alpha banterer, or, in rarer circumstances, an effective "banter beacon", defined as one able to signal the presence of banter within moments of it appearing. Has been known to be used as a noun in the previously described ways but is certainly better employed as a single exclamation, leaving explanation of its context to those immediately adjacent to the utterer of the word. Has known to be used in conjunction with "Lad!" throughout history.
girl: "why do you keep throwing stones at me?"
boy: "probably because i don't ever wanna have sex with you"
banter beacon: "BAAAANTER!!!!"

mandem: "shu-hutt your mouth or im gonna stab you blud"
banter beacon: "i think that calls for...BAAAN-TERRR!

"*innocent comment by someone more socially vulnerable than you*"
...silence...
"BBBBBBAAAN-TERRRRRRR!"

"you have to start taking this more seriously or you'll mess it up for all of us"
"............SHUT UP"
"BANTER!"

head: "im afraid you're being expelled for what you did"
banterous individual: ".....im afraid you're being expelled for what i did"
head: "please, im trying to help you finish with your dignity intact"
banterous individual: "...that's what she said"
hidden banter beacon: "BAAAAAAANTER!"
by twelfth elf June 6, 2010
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The contemporary meaning for abuse and idle chatting and socially inexcusable comments by those people who lack the ability to construct intellectual arguments.
by 922 May 12, 2012
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"banter" = when the bullying becomes too much for the recipient, the sender declares 'its only banter', as an escape goat, deeming it acceptable behavior
"You are fucking useless at this job"
"Oh thanks..."
"Only kidding mate, just banter"
by RealMenCry September 26, 2018
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Word to describe absolute first class humerous bickering and or insulting.
Chav: oy mate u look like a cock
Top lad: shut it you uneducated arse
Chav: hey I've got three btecs u twat
Top lad: I rest my case
BANTER SIR!!
by Lord of the banter January 22, 2012
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