Definition of slanguage in English:

slanguage

noun

  • [mass noun] A form of slang; slangy speech.

    ‘weird and wonderful teen slanguage’
    • ‘That is an example of slanguage and the teacher is one of our favorites.’
    • ‘In another aspect, we have slanguage, a blend of slang and language.’
    • ‘With a squint of eye, a curl of lip, a twist of neck, and a body slanguage equally at home in boardrooms and barrooms, she embodies everyone she sees.’
    • ‘They have to process every variety of English slanguage, plus Hindi, Urdu, Afrikaans, Tamil and Punjabi, and decide whether it's unnecessary, detrimental, stupid or just plain old banter.’

Origin

Late 19th century: blend of slang and language.

Pronunciation:

slanguage

/ˈslaŋɡwɪdʒ/