jargon
n. uncountablen. special words or phrases used by a specific group of people, like doctors or computer experts, that are hard for others to understand. You use this when you think someone's language is too technical or confusing.
n. specialised terminology or technical language used by a particular profession or group. Often carries a pejorative nuance when used to describe language that is unnecessarily obscure to outsiders.
I cannot understand all this legal jargon in the contract.
The software manual was so full of technical jargon that the average user found it impossible to follow.
While jargon facilitates efficient communication among specialists, it can act as a barrier to entry for laypeople attempting to engage with complex academic or professional subjects.
From Middle English jargoun, jargon, from Old French jargon, a variant of gargon, gargun (“chatter; talk; language”).
Typically uncountable; when used in the plural, it refers to different types of specialised languages.