the.com/lingo

The dialect of belonging — speak it and you're in, flub it and you're caught.

means A specialized vocabulary used by a particular group, trade, or region — the words outsiders stumble over.

from Likely from 18th-century pidgin English, itself probably borrowed from Portuguese 'lingoa' or Latin 'lingua,' meaning tongue or language — the same root that gives us 'linguistics' and 'language.' It entered English slang through sailors and traders who picked up bits of other languages in ports, using 'lingo' dismissively for any speech they didn't understand. The word kept that slightly outsider's shrug built into it — lingo is always somebody else's special talk, until you learn it, and then it's just how you speak.

origin
from lingua, latin for tongue
function
signals insider status faster than credentials
shelf life
expires the moment outsiders learn it
irony
jargon calling itself lingo sounds friendlier, still excludes
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