not sufficient; lacking in what is necessary or required: an insufficient answer.
deficient in force, quality, or amount; inadequate: insufficient protection.
- in·suf·fi·cient·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use insufficient in a sentence
Ideas that seem good at first may not seem so great after research, and many commonly criticized failures were likely results of insufficient research.5 UX design research mistakes you can stop making today | Walter Thompson | November 9, 2020 | TechCrunch
Central America has seen wide disease spread in some countries as well, and Mexico in particular has been criticized for insufficient testing to accurately determine the scope of community transmission.50 million world Covid-19 cases: The biggest outbreaks, explained | Christina Animashaun | November 9, 2020 | Vox
Symptoms that prompted the partners to pause the studies were unlikely to be linked to the shot, or there was insufficient evidence to say for sure, according to documents sent to participants.AstraZeneca cleared by U.S. regulators to resume COVID vaccine trial | Rachel Schallom | October 23, 2020 | Fortune
What’s more, the narrow boreholes can only accommodate thin canisters, which may be insufficient for long-term safety.Finding homes for the waste that will (probably) outlive humanity | Katie McLean | October 21, 2020 | MIT Technology Review
The 0-5 Jets reportedly attempted to find a team willing to trade for Bell, but general manager Joe Douglas apparently found insufficient interest.Running Backs Are As Replaceable As Ever This Year. So Why Did Kansas City Pick Up Le’Veon Bell? | Josh Hermsmeyer | October 16, 2020 | FiveThirtyEight
Anyone considered insufficiently anti-Communist was deemed a “comsymp”—short for Communist sympathizer.A Brief History of Wingnuts in America; From George Washington to Woodstock | John Avlon | August 17, 2014 | THE DAILY BEAST
He has since been considered increasingly politically vulnerable after Cruz attacked him as insufficiently conservative.
In response, Smith quit the party in a huff that July, trashing it as insufficiently principled on his way out the door.
Republicans attacked Hagel for being insufficiently hawkish on Hizbullah.What The Hagel And Sequester Battles Say About The GOP | Peter Beinart | February 28, 2013 | THE DAILY BEAST
On Iran, Republicans accused Hagel of being insufficiently pro-war.What The Hagel And Sequester Battles Say About The GOP | Peter Beinart | February 28, 2013 | THE DAILY BEAST
The old postman says it was insufficiently addressed, or it 'ud ha' been here by first post.Hilda Lessways | Arnold Bennett
The ship was not large and was insufficiently equipped; the sailors were mostly heretics.
All were badly and insufficiently fed, as much from disorganized commissariat arrangements as from actual want of supplies.The Philippine Islands | John Foreman
Infection in man occurs from ingestion of insufficiently cooked pork, which contains encysted embryos.A Manual of Clinical Diagnosis | James Campbell Todd
But there is also a third point as yet insufficiently realised—the historic factors of the problem.The Three Days' Tournament | Jessie L. Weston
British Dictionary definitions for insufficient
not sufficient; inadequate or deficient
- insufficiently, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012