Affair vs Event

When to use each in English, with meaning, register, and examples.

Affair

Top 2,000 (common)B2noun

Event

Top 1,000 (very common)A1noun
Most common: Event
 AffairEvent
Pronunciation🇬🇧 /["/əˈfeə(r)/"]/🇺🇸 /["/əˈfer/"]/🇬🇧 //ˈɪvɛnt//🇺🇸 //ɪˈvɛnt//
MeaningA secret relationship, usually romantic, that someone has while they are married.A planned occasion or activity.
ExampleThe politician was involved in a scandal involving an extra-marital affair.The concert was the biggest **event** of the year.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR levelB2A1
Part of speechnounnoun
Collocationscurrent, public, human, administer, arrange, attend to, affairs of state, a state of affairs, whole, glittering, grand, deal with, handle, be involved in, somebody’s involvement in the affair, wash your hands of the affair, brief, casual, clandestine, carry on, conduct, have, go on, affair between, affair with, current, public, human, administer, arrange, attend to, affairs of state, a state of affairs, family, somebody’s own, personal, interfere in, meddle in, somebody’s affair, no affair of somebody’sspecial event, major event, live event, community event
Antonymsfidelity, loyaltynone
Common mistakesConfusing 'affair' with 'event' as in 'the fair was fun.', Using it to mean a casual relationship rather than a secretive one., Saying 'have an affair with' instead of 'have an affair' for conciseness.Confused with 'incident' which implies a negative situation., Using it in singular form when referring to multiple occurrences.
Usage notesTypically used in contexts about relationships. It's more formal than 'hookup' and less formal than 'romantic relationship.' Not appropriate for light conversation.Use 'event' for formal occasions like conferences or informal gatherings like parties. Avoid using in casual, everyday conversations.

Frequently asked questions: Affair vs Event

What's the difference between Affair and Event?

Affair: A secret relationship, usually romantic, that someone has while they are married. Event: A planned occasion or activity.

Which is more common: Affair and Event?

Event is the most common in everyday English.

Are Affair and Event the same CEFR level?

Affair: B2, Event: A1 on the CEFR scale.

Can I use Affair and Event interchangeably?

Not always. Affair and Event are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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