Occasional: Definition, Usage & Common Mistakes

Meaning 1：infrequent or irregular (occasional)

occasional 🔊

/əˈkeɪʒənl/

adj.

Describing something that happens or is done only from time to time, not regularly.

Illustration of the word occasional: a calendar with only a few random dates highlighted, showing infrequent events.

infrequent or irregular 🔊

➕

/ɪnˈfriːkwənt ɔːr ɪˈrɛɡjʊlər/

adj.

Happening or done only sometimes, at irregular intervals, rather than on a regular or constant basis.

📁 Category：Time & Dates 🔖 Level：Intermediate

📘 Details & Usage

📖 Root Explanation

From Latin 'occasion-', meaning an event or happening, plus '-alis' (relating to).

💡 Mnemonic

Think of a special OCCASION you have only once in a while, not every day.

📖 Example

We get occasional rain in our city, so I don't carry an umbrella every day. 🔊 Our city experiences rain infrequently, so I do not carry an umbrella daily.

🔗 Collocations

on occasion – from time to time; now and then

an occasional visitor – a person who visits only sometimes

occasional showers – sporadic periods of rain

🔄 Synonyms

sporadic (adj.) – occurring at irregular intervals or only in a few places

intermittent (adj.) – starting and stopping repeatedly, with pauses in between

infrequent (adj.) – not happening often

🚫 Antonyms

regular (adj.) – happening or doing something repeatedly at fixed times

constant (adj.) – happening all the time or repeatedly

frequent (adj.) – happening or doing something often

🌱 Derivatives

occasionally (adv.) – at times; now and then

occasion (n.) – a particular time or instance of something happening

📖 Cultural Story

Derived from Latin 'occasio', which itself comes from 'ob-' (down) and 'cadere' (to fall), literally 'falling towards' an event. Its modern sense of 'occurring now and then' developed in English from the 15th century.