jargon

jargon — noun

1. the set of special words and expressions that people in a particular profession,

1.nounB2
Definition

the set of special words and expressions that people in a particular profession, industry, or area of study use, and that people outside that group often find hard to understand.

Example

The surgeon explained the procedure using medical jargon that confused the patient's family.

medical jargon — domain adjective + jargon

Amihan struggled to understand the legal jargon in her apartment lease contract.

Common collocations
  • medical jargon
  • legal jargon
  • technical jargon
  • academic jargon
  • corporate jargon
  • bureaucratic jargon
  • jargon-filled
  • jargon-heavy
  • full of jargon
  • laden with jargon
  • jargon buster
Synonyms
  • terminology

    neutral and factual; refers to the technical terms of a field without the negative tone that jargon sometimes carries.

  • lingo

    informal and often affectionate; refers to the everyday language of a group rather than formal professional terms.

  • argot

    formal or literary; suggests a secret or semi-secret vocabulary used by a closed group such as criminals or subcultures.

  • cant

    dated or specialist; refers to the secret language of thieves or, historically, of certain religious groups.

Antonyms
  • plain English

    simple, clear language that anyone can understand, without specialized terms.

Grammar Patterns

domain noun + jargon (e.g. legal jargon)

jargon of + field

Usage Note

Jargon is uncountable and does not normally take a plural form. It often carries a mildly negative tone — it suggests the language is unnecessarily complex or shuts out non-specialists. For a neutral alternative, use 'terminology'; for informal group language, use 'slang'.

Common Mistakes

The lawyer used many jargons in the contract.
The lawyer used a lot of jargon in the contract.
Jargon is uncountable; it has no plural form.
Teenagers have their own jargon, like 'lit' and 'sus'.
Teenagers have their own slang, like 'lit' and 'sus'.
Jargon belongs to professions or fields; slang belongs to social or age groups.

jargon — verb

Word family

  • jargonize
    verbC2
  • jargony
    adjectiveC1
  • jargonistic
    adjectiveC2
  • jargon-filled
    adjectiveC1

Synonym discussion

Sense: noun/1

Jargon and terminology both refer to the specialized words used in a field, but jargon often carries the suggestion that these words are unnecessarily hard for outsiders to understand, whereas terminology is neutral and factual. Lingo is informal and often affectionate — fans talk about 'sports lingo' or 'gaming lingo' without criticism. Slang refers to creative, informal words used by social or age groups rather than by professionals; 'lit,' 'sus,' and 'yeet' are slang, not jargon. A medical textbook uses terminology; a doctor speaking to another doctor uses medical jargon; a teenager uses slang. If you want to be neutral, choose terminology; if you want to describe informal group talk, choose lingo or slang depending on the group.

jargon ↗terminology ↗lingoslang ↗

Common collocations

Nouns

  • jargon buster
  • jargon dictionary

Phrases

  • full of jargon
  • laden with jargon
  • packed with jargon

Prepositions

  • jargon of [field]

Etymology

Old FrenchLatinEnglish

Jargon entered English in the 14th century from Old French 'jargoun', meaning 'the chattering of birds' or 'unintelligible speech'. The French word probably came from a Latin base meaning 'to chatter' (related to 'garrulus', talkative). Over the centuries, the meaning shifted from 'confused, meaningless noise' to 'specialized vocabulary of a group' — a change that happened in the 1600s as trade and science created their own technical terms.