English Reference
verb

necessitate

v.
US /nəˈsɛsəˌteɪt/ UK /nəsˈɛsɪtˌeɪt/ ne·ces·si·tate UK spelling necessitated, necessitates, necessitating

  1. 01 C1 Advanced FormalAcademic

    to make something necessary, often because of a change in plans or a new problem.

    to make something necessary as a logical or practical consequence. Transitive — requires a direct object, often a noun phrase or a gerund.

    Simple

    The sudden rainstorm will necessitate a change in our outdoor wedding plans.

    In context

    The discovery of structural flaws in the bridge's foundation will necessitate a complete redesign of the support pillars.

    Usage

    Commonly followed by a noun phrase or a gerund (e.g., 'necessitate moving').

    obviateprevent
  2. 02 C1 Advanced Formal

    to force someone to do something because there is no other choice.

    to compel or force a specific course of action due to external circumstances.

    Simple

    Increased costs have necessitated a reduction in the number of staff members.

    In context

    The severe budget deficit necessitated drastic cuts to public services that had previously been considered essential.

    Usage

    Often used in the passive voice to describe actions forced by economic or legal conditions.

Beard's passing "necessitates the cancellation" of the band's tour dates this week in Utah and Colorado, the statement said.

BBC News· 18 Aug 2026

Increasing flash floods threaten decoration and structural stability, necessitating preventive conservation.

Phys.org· 12 Aug 2026

From earlier necessitat, from Medieval Latin necessitātus, perfect past participle of necessitō (“to make necessary”) (see -ate (verb-forming suffix, of participial origin)), from Classical Latin necessitās (“necessity, need”) + -ō. Necessitās is derived from necesse (“unavoidable”) (from ne- (“not”) + cessus (“conceded, given up, yielded”). By surface analysis, necessitō + -ate.

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

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