1
as in abnormal
departing from some accepted standard of what is normal
it was a bank customer's slightly irregular behavior that made people suspicious
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
2
as in sporadic
lacking in steadiness or regularity of occurrence
irregular mail delivery to the island
Synonyms & Similar Words
Antonyms & Near Antonyms
3
as in uneven
not having a level or smooth surface
although the moon looks smooth from here, it actually has a very bumpy and irregular surface
Synonyms & Similar Words
Antonyms & Near Antonyms
4
as in informal
not rigidly following established form, custom, or rules
the request is irregular, but I'll allow it
Synonyms & Similar Words
Antonyms & Near Antonyms
5
as in changing
not staying constant
irregular gusts of wind
Synonyms & Similar Words
Antonyms & Near Antonyms
as in guerilla
Related Words
Dissimilar Words
Example Sentences
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Recent Examples of irregular
Time, 14 Nov. 2019
Pakistani irregulars invaded, India intervened, and the two countries fought to a stalemate.
—Washington Post, 15 Feb. 2019
Frey Lindsay, Forbes.com, 22 July 2025
The delicate fragments that Mr. Li and his team of conservators are refashioning have irregular edges and form no apparent border.
—New York Times, 22 July 2025
See All Example Sentences for irregular
Adjective
Turkish troops then began shelling Kurdish towns in Syria, and Turkish forces pushed forward, irregulars executing people in ditches along the road.
—Time, 14 Nov. 2019
Pakistani irregulars invaded, India intervened, and the two countries fought to a stalemate.
—Washington Post, 15 Feb. 2019
Noun
Many countries in Europe - including the U.K. - have used such ‘scientific methods’ as x-rays of bone density to try to determine whether an asylum seeker or irregular migrant is a legal adult.
—Frey Lindsay, Forbes.com, 22 July 2025
The delicate fragments that Mr. Li and his team of conservators are refashioning have irregular edges and form no apparent border.
—New York Times, 22 July 2025
See All Example Sentences for irregular
Recent Examples of Synonyms for irregular
Adjective
-
This mutation produces an abnormal transthyretin (TTR) protein that misfolds and forms amyloid deposits in the heart.—
Patty Weasler,
Verywell Health,
14 July 2025
-
Retinopathy of prematurity is an eye disease that impacts premature babies and occurs when there is abnormal growth of the blood vessels in the retina.—
Ramal Nasim
Updated July 14,
Kansas City Star,
14 July 2025
Adjective
-
However, reaching these outcomes takes more than just sporadic posts.—
Jonathan Schwartz,
Forbes.com,
24 July 2025
-
The monsoon season is now here and has brought deadly flash flooding along old burn scars in Ruidoso, New Mexico, while distributing sporadic rain in the state’s Gila National Forest.—
Abe Streep,
ProPublica,
22 July 2025
Adjective
-
With a single subwoofer, the frequency response can be uneven because of peaks and dips in certain frequency ranges.—
Mark Sparrow,
Forbes.com,
3 Aug. 2025
-
As a result, the effects of the defunding will be uneven.—
Nicholas Quah,
Vulture,
1 Aug. 2025
Adjective
-
At that initial playoff committee meeting in Daytona Beach, an informal poll in the room showed a split between those who thought a change was desirable (again, including this writer) and those who felt the status quo was fine.—
Jeff Gluck,
New York Times,
31 July 2025
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Beijing has issued informal guidance to major Chinese tech groups to increase purchases of domestic AI chips in order to reduce reliance on Nvidia and support the evolution of a rival domestic chip ecosystem.—
Eleanor Olcott,
ArsTechnica,
31 July 2025
Adjective
-
This unnatural divide goes back to the beginnings of medicine and dentistry.—
Burkhard Bilger,
New Yorker,
28 July 2025
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Action Step: Run your materials through a grammar checker, but always read them over yourself to catch subtle mistakes or unnatural language.—
Caroline Castrillon,
Forbes.com,
20 July 2025
Adjective
-
There are occasional boring stretches, along with confounding ones.—
Dennis Harvey,
Variety,
3 Aug. 2025
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Limited closet space may mean that following the one in, one out rule isn't just an occasional practice but is necessary in order to prevent your wardrobe from bursting at the seams!—
Sarah Lyon,
Southern Living,
3 Aug. 2025
Adjective
-
The vastness of the canyon, with its jagged edges and rushing rivers.—
Shelby Slade,
AZCentral.com,
16 July 2025
-
Major stock indexes continued their jagged descent downward in morning trading Tuesday after tumbling Monday.—
Tobias Burns,
The Hill,
9 July 2025
Adjective
-
Batman '66 looks more unconventional with every passing decade of by-the-numbers Gotham grimness.—
Devan Coggan,
EW.com,
3 Aug. 2025
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This unconventional approach not only retained the leader but also fostered the growth of others with his expertise, proving the value of flexibility in leadership.—
Glenn Llopis,
Forbes.com,
2 Aug. 2025
Cite this Entry
“Irregular.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/irregular. Accessed 7 Aug. 2025.
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