slang

Slang refers to a type of language that's too informal to use in certain situations. You can tell a word or phrase is slang when it becomes uncool to use it after a while — like "groovy" or "far out."

Often, slang terms are considered vulgar or offensive to use in polite conversation. However, over time, many slang expressions have become part of our standard vocabulary, as they are more commonly used. As a noun, slang can also mean "the characteristic language of a particular group of people" like a slang used by computer programmers.

Definitions of slang
1

n informal language consisting of words and expressions that are not considered appropriate for formal occasions; often vituperative or vulgar

“their speech was full of slang expressions”
Synonyms:
slang expression, slang term
Type of:
non-standard speech
speech that differs from the usual accepted, easily recognizable speech of native adult members of a speech community

n a characteristic language of a particular group (as among thieves)

Synonyms:
argot, cant, jargon, lingo, patois, vernacular
Types:
street name
slang for something (especially for an illegal drug)
rhyming slang
slang that replaces words with rhyming words or expressions and then typically omits the rhyming component
Type of:
non-standard speech
speech that differs from the usual accepted, easily recognizable speech of native adult members of a speech community

v use slang or vulgar language

Type of:
speak, talk
use language

v fool or hoax

Synonyms:
befool, cod, dupe, fool, gull, put on, put one across, put one over, take in
Types:
kid, pull the leg of
tell false information to for fun
Type of:
betray, deceive, lead astray
cause someone to believe an untruth

v abuse with coarse language

Type of:
abuse, blackguard, clapperclaw, shout
use foul or abusive language towards