inadequate
Americanadjective
-
not good enough for the purpose; inept or unsuitable.
This old tent they gave us is completely inadequate—it’s equally bad at keeping out both the rain and the bugs!
- Synonyms:
- imperfect, defective, incommensurate, incompetent, inapt, incomplete
- Antonyms:
- sufficient
-
not sufficient for the purpose; not enough.
The set of linens we received was so inadequate, we were asking friends for a loan of napkins and tablecloths.
-
Psychiatry. ineffectual in response to emotional, social, intellectual, and physical demands in the absence of any obvious mental or physical deficiency.
adjective
-
not adequate; insufficient
-
not capable or competent; lacking
Other Word Forms
Etymology
Origin of inadequate
Explanation
Something inadequate doesn't cut it. If you lack just a few centimeters to reach the low mark on the wooden sign, your height is inadequate for riding the big roller coaster. Wear heels next time. The Latin root of adequate means "equal to," so inadequate refers to things that aren't equal to what is expected or needed. Something can be naturally inadequate, as in "inadequate rainfall to stop the fire," or it can result from lack of effort, as when someone avoids a question: "Your response was totally inadequate. Tell me what really happened."
Vocabulary lists containing inadequate
In the Mood? 100 Words to Describe Emotions
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Paltry Parlance: Synonyms for "Few"
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"When Do Kids Become Adults?" Vocabulary from the argument
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
"In our submission 33 years for this offending is manifestly inadequate," he argued.
From Barron's ● Aug. 20, 2026
At the same hearing, Victoria's Director of Public Prosecutions is appealing against the sentence, arguing a 33-year parole period is "manifestly inadequate".
From BBC ● Aug. 19, 2026
Many residents blame the city for what they deem an inadequate response to the fire and a lack of transparency and resources.
From BBC ● Aug. 9, 2026
The second cub died at 3 weeks after he was also removed from Ruby’s care for hand-raising “due to inadequate nursing by the cub,” the zoo said in a statement.
From Los Angeles Times ● Aug. 8, 2026
It was a perfectly respectable appliance for, say, buttering pancakes, but patently inadequate for defending oneself against 400 pounds of ravenous fur.
From "A Walk in the Woods" by Bill Bryson
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
