Idiolect – a person’s individual speech pattern. The way in which a person uses language.
His speech was garbled; he uttered harsh language; he recorded the spoken language of the streets.
So, if I understand correctly from the third description above, “Street Talk” would be an idiolect as in the conversation below:
Tommy – “Yo dude! I’m like going to totally 360 over this Austin Allegro on a baking tray!”
Billy -“Whoa boi! That’s totally Radiculas.”
Bottom line though, everybody on the planet has his own way with language, each one of us has an idiolect.
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