Where does “slanguage” come from?

slanguage (English) comes from English language, from Middle English langage, from Old French language, from Vulgar Latin linguaticum, from Latin lingua, from Latin -ula, from Proto-Indo-European -tlom, from Proto-Indo-European -trom — Derives agent nouns from verbs, denoting someone...

slanguage (English): A particular vernacular or vocabulary of slang;...

Definitions

  1. A particular vernacular or vocabulary of slang;...

Ancestry of “slanguage”, step by step

slanguage traces back through two separate lines of ancestry.

via English language

StepLanguageWordMeaning
1EnglishlanguageA body of words, and set of methods of combining...
2Middle Englishlangagelanguage, tongue, speech; dialect, idiom, local...
3Old Frenchlanguagelanguage (style of communicating)
4Vulgar Latinlinguaticumlanguage
5Latinlinguatongue; a speech; an utterance or expression
6Latin-ularegō + API → rēgula; tegō + API → tēgula;...
7Proto-Indo-European-tlomAlternative form of *-trom
8Proto-Indo-European-tromForms nouns denoting a tool or instrument
9Proto-Indo-European-tḗrDerives agent nouns from verbs, denoting someone...

via English slang

StepLanguageWordMeaning
1EnglishslangLanguage outside of conventional usage and in the...
2EnglishslingTo throw with a circular or arcing motion; To...
3EnglishspiderlingAn immature spider; Any of various herbaceous...
4EnglishLingAny of various codlike saltwater fish often used as food by humans, those of the genus Molva, in the family Lotidae
5Middle EnglishlingAny of various varieties of heather or broom
6Old Norselyngheather, ling
7Proto-Germaniclingwąheather, ling
8Proto-Indo-Europeanlengʷʰom
9Proto-Indo-Europeanlengʷʰ-light, agile, nimble; light, not heavy, agile,...
Every word from Proto-Indo-European -tḗr