English Reference
adjective

adequate

adj.
US /ˈædəˌkweɪt/ UK /ˈædɪkwət/ ad·e·quate

  1. 01 B2 Upper Intermediate AcademicGeneral-service

    enough in quality or amount for a particular purpose.

    satisfactory or acceptable in quality or quantity for a specific need or requirement.

    Simple

    The old heater was adequate for the small bedroom, but it couldn't warm the whole house.

    In context

    The initial budget was deemed adequate for the preliminary research phase, though the board acknowledged that further funding would be required for the full-scale trial.

    Usage

    Often followed by the preposition 'for' or an infinitive 'to' phrase.

    Pitfall
    The food was adequate for me. The food was adequate for my needs.

    While you can say something is 'adequate for' a person, it is more common and precise to say it is 'adequate for' a specific purpose or need.

Don't confuse

adequate vs sufficient — Sufficient means you have the right amount; adequate means that amount is just good enough to pass.

Usage consider adequate

Why didn’t service members receive adequate mental health support?

Al Jazeera· 14 Aug 2026

That means some residents will have been left without adequate water for up to a year.

The Guardian· 11 Aug 2026

Learned borrowing from Latin adaequātus, perfect passive participle of adaequō (“to make equal to”) (see -ate (adjective-forming suffix) and -ate (verb-forming suffix)), further from ad (“to, towards, at”) + aequō (“to make equal, equalize”), from aequus (“equal”). Cognate with French adéquat.

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

This entry
Level B2 · Upper Intermediate
Frequency Common
Updated