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
Merve Ceylan, Health, 8 July 2025
These issues can also be caused by irregular watering, pests, or certain diseases.
—Lauren Landers, Better Homes & Gardens, 7 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
Low or high potassium levels can cause severe health conditions, including muscle weakness, irregular heartbeat, and, in severe cases, cardiac arrest.2
Potassium chloride is mainly used to treat and manage low blood potassium levels.
—Merve Ceylan, Health, 8 July 2025
These issues can also be caused by irregular watering, pests, or certain diseases.
—Lauren Landers, Better Homes & Gardens, 7 July 2025
See All Example Sentences for irregular
Recent Examples of Synonyms for irregular
Adjective
-
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
-
This mutation produces an abnormal transthyretin (TTR) protein that misfolds and forms amyloid deposits in the heart.—
Patty Weasler,
Verywell Health,
14 July 2025
Adjective
-
Hamas long ago expended the vast majority of its rocket arsenal, able now to launch only sporadic rockets that have near-zero impact.—
Oren Liebermann,
CNN Money,
12 July 2025
-
After several days of spotty showers, a few stronger, scarier storms, and sporadic outbreaks of sunshine, Austin has virtually zero rain chances on Thursday, according to the National Weather Service.—
Roberto Villalpando,
Austin American Statesman,
10 July 2025
Adjective
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The pandemic may have accelerated long-standing public health challenges, and the recovery, the study makes clear, has been uneven and incomplete.—
Los Angeles Times,
Los Angeles Times,
10 July 2025
-
Whether dealing with slick grass, gravel paths, or uneven surfaces, the Sunseeker Elite X7 maintains control and performance with minimal slippage.—
William Jones,
USA Today,
9 July 2025
Adjective
-
Within the outcome document, the drafters champion several strategies to expand domestic tax bases, such as integrating the informal sector into the formal economy and identifying undeclared income and wealth.—
Nana Ama Sarfo,
Forbes.com,
7 July 2025
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Whether for a casual outing, an afternoon of shopping, or even an informal dinner, this combination has the power to transform a simple look into a fashion statement.—
René Chávez Esparza,
Glamour,
4 July 2025
Adjective
-
While some can be used across different hair textures, lengths, curl patterns, thicknesses, colors (natural and unnatural), and concerns, many are created with specific consumers and their needs in mind.—
Jailynn Taylor,
Allure,
7 July 2025
-
His footwork and instincts at third base are unnatural regardless of the maximum effort Chisholm Jr. has put into playing the position.—
Wayne G. McDonnell,
Forbes.com,
7 July 2025
Adjective
-
The 32-year-old spent the last two seasons exclusively in the NHL after grinding his way through AHL seasons with the occasional call-up.—
Matthew Fairburn,
New York Times,
10 July 2025
-
Several chains have announced deals to mark the occasional on their websites, in social media or in news releases.—
Fielding Buck,
Oc Register,
10 July 2025
Adjective
-
In a profession that lives at the jagged edge of justice and humanity, showing up matters.—
Sonia Singh,
Rolling Stone,
10 July 2025
-
The end of the branch shows a smooth cut, but the bark layer has a jagged appearance.—
Tim Johnson,
Chicago Tribune,
5 July 2025
Adjective
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In advance of this month’s release of the Happy Gilmore 2, Callaway Golf has unveiled a new limited edition Odyssey hockey stick putter and golf balls inspired by the movie, which showcases the return of funnyman Adam Sandler as a failed hockey player turned unconventional golfer.—
Erik Matuszewski,
Forbes.com,
11 July 2025
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Despite financial insecurity, both parents encouraged their daughters to pursue their dreams, however unconventional — their feminist, progressive spirit guided Earhart like a compass.—
Los Angeles Times,
Los Angeles Times,
11 July 2025
Cite this Entry
“Irregular.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/irregular. Accessed 21 Jul. 2025.
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