insufficient

adjective

in·​suf·​fi·​cient ˌin(t)-sə-ˈfi-shənt How to pronounce insufficient (audio)
: not sufficient : inadequate
insufficient funds
especially : lacking adequate power, capacity, or competence
insufficient bandwidth
insufficiently adverb

Examples of insufficient in a Sentence

The case was thrown out because of insufficient evidence. there's been an insufficient number of volunteers for the job, so I'll have to select someone
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Tax revenues alone are insufficient to cover the government’s expenses. Lee Ying Shan, CNBC, 15 July 2025 The comments coincided with the 10-year anniversary of the Joint Comprehensive Plan of Action (JCPOA), which was originally intended to halt Iran’s nuclear ambitions, but which some have argued was insufficient to adequately deter Tehran. Caitlin McFall, FOXNews.com, 14 July 2025 The state has set less money aside to fight fires this year, which Gov. Brad Little said in an April statement may be insufficient. Idaho Statesman, 12 July 2025 Additionally, the documentation of restraint checks is often insufficient, with no requirements for video or audio recordings to support or dispute inmate claims of mistreatment. Walter Pavlo, Forbes.com, 11 July 2025 See All Example Sentences for insufficient

Word History

Etymology

Middle English, from Anglo-French, from Late Latin insufficient-, insufficiens, from Latin in- + sufficient-, sufficiens sufficient

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of insufficient was in the 14th century

Browse Nearby Words

Cite this Entry

“Insufficient.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/insufficient. Accessed 22 Jul. 2025.

Kids Definition

insufficient

adjective
in·​suf·​fi·​cient ˌin(t)-sə-ˈfish-ənt How to pronounce insufficient (audio)
: not sufficient : inadequate
insufficiently adverb

More from Merriam-Webster on insufficient

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