English Reference
adjective · noun

colloquial

adj. · n.
US /kəˈɫoʊkwiəɫ/ UK /kəlˈəʊkwɪəl/ col·lo·qui·al

  1. 01 C1 Advanced Technical

    adj.describes words or language that you use when talking to friends or family in a casual way.

    adj.characteristic of or appropriate to ordinary or familiar conversation rather than formal speech or writing.

    Simple

    The teacher explained that 'gonna' is a colloquial way of saying 'going to'.

    In context

    While the student's essay was logically sound, the professor noted that the tone was far too colloquial for a formal academic submission.

    Usage

    Usually placed before the noun it describes, such as 'colloquial expression' or 'colloquial language'.

    Teacher's tip

    Learners often confuse 'colloquial' with 'slang'; explain that colloquialisms are standard but informal, whereas slang is often restricted to specific social groups.

  2. 02 C2 Proficiency TechnicalFormal

    n.a word or phrase that is used in everyday conversation.

    n.a colloquial word, phrase, or expression; a colloquialism.

    Simple

    The phrase 'what's up' is a common colloquial used in many English-speaking countries.

    In context

    The dictionary includes several new colloquials that have entered the language through social media and digital communication.

    Usage

    This noun form is much less common than the adjective or the related noun 'colloquialism'.

    Teacher's tip

    Advise students to use 'colloquialism' instead of 'colloquial' when they need a noun, as it is the more standard term.

    colloquialisminformalism

As mentioned earlier, it's a pretty colloquial greeting, so you should use it with young people or people you know well rather than in more formal situations or with older people.

The Local· 25 Aug 2026

Unlike, say, the word “haemoglobin”, terms such as “cognition” have been around for so long that they’ve been coded into colloquial use in phrases such as “cognitive decline” and “cognitive bias”.

The Guardian· 8 Sept 2026

1751, from earlier term colloquy (“a conversation”), from Latin colloquium (“conference, conversation”), from con- (“together”) + loquor (“to speak”), + -al.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Latin colloquium
Level C1 · Advanced
Frequency Occasional
Updated