ad·​e·​qua·​cy ˈa-di-kwə-sē How to pronounce adequacy (audio)
plural adequacies
: the quality or state of being adequate

Did you know?

When we question the adequacy of health-care coverage, or parking facilities, or school funding, we're asking if they are equal to our need. The adjective adequate means "enough" or "acceptable"—though in sentences like "His performance was adequate", it really means "no better than acceptable".

Examples of adequacy in a Sentence

the fire department sent someone to determine the adequacy of the building's evacuation plan
Recent Examples on the Web Utilities are projecting huge load growth in the West, creating resource adequacy problems. Joan Meiners, The Arizona Republic, 1 July 2024 The department issued certificates of adequacy and thousands of well permits in that area knowing that the river's federal water rights would set limits on pumping, Silver added. Clara Migoya, The Arizona Republic, 25 June 2024 Neither the Canadian Securities Exchange nor the Market Regulator (as that term is defined in the policies of the Canadian Securities Exchange) accepts responsibility for the adequacy or accuracy of this release. Fort Worth Star-Telegram, 18 June 2024 The National Highway Traffic Safety Administration is investigating the adequacy of Tesla's December 2023 recall of more than 2 million vehicles to update its autopilot features after numerous crashes. Mike Snider, USA TODAY, 27 Apr. 2024 See all Example Sentences for adequacy 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'adequacy.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


adequ(ate) + -acy

First Known Use

1701, in the meaning defined above

Time Traveler
The first known use of adequacy was in 1701

Dictionary Entries Near adequacy

Cite this Entry

“Adequacy.” Dictionary, Merriam-Webster, Accessed 14 Jul. 2024.

Kids Definition


ad·​e·​qua·​cy ˈad-i-kwə-sē How to pronounce adequacy (audio)
plural adequacies
: the quality or state of being adequate

More from Merriam-Webster on adequacy

Last Updated: - Updated example sentences
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