English Reference
adjective · noun

unexpected

adj. · n.
US /ˌənɪkˈspɛktɪd/ UK /ˌʌnɛkspˈɛktɪd/ un·ex·pect·ed UK spelling unexpecteds

  1. 01 B1 Intermediate

    adj.describes something that happens even though you did not think it would.

    adj.not anticipated or foreseen; occurring without prior notice or expectation.

    Simple

    The rain was unexpected because the morning sky had been perfectly clear.

    In context

    The company faced several unexpected challenges during the merger, ranging from cultural clashes to sudden regulatory changes.

  2. 02 B2 Upper Intermediate

    n.surprising events or things that you did not plan for.

    n.events or circumstances that were not anticipated; typically used with the definite article as a collective noun.

    Simple

    When you travel to a new country, you must be prepared for the unexpected.

    In context

    A seasoned diplomat must always be prepared for the unexpected, as even the most stable negotiations can be derailed by a single stray comment.

    Usage

    Almost always used as 'the unexpected'.

    surprisesunforeseen events
    the inevitable

For many people in their 50s and 60s, losing a job can be the start of a long and unexpected struggle to get back into work.

The Guardian· 14 Aug 2026

Stock turned up for sale in unexpected places as retailers sought to cash in on demand, including a central London bakery .

BBC News· 12 Aug 2026

From un- + expected.

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

This entry
Level B2 · Upper Intermediate
Frequency Common
Updated