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 guerrilla
Related Words
Dissimilar Words
Example Sentences
Examples are automatically compiled from online sources to
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Recent Examples of irregular
Rosemary Trout, The Conversation, 10 June 2026
Slugs and snails create large, irregular holes with smooth edges in foliage, typically located between the veins of leaves.
—Arricca Elin Sansone, Southern Living, 10 June 2026
Paula Allen, ExpressNews.com, 15 Feb. 2020
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
See All Example Sentences for irregular
Adjective
The unsaturated fats give them an irregular shape on a molecular level.
—Rosemary Trout, The Conversation, 10 June 2026
Slugs and snails create large, irregular holes with smooth edges in foliage, typically located between the veins of leaves.
—Arricca Elin Sansone, Southern Living, 10 June 2026
Noun
As volunteer companies were raised to drive out the Mexican forces — who were occupying their own country — some of the irregulars were joined by free black men.
—Paula Allen, ExpressNews.com, 15 Feb. 2020
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
See All Example Sentences for irregular
Recent Examples of Synonyms for irregular
Adjective
-
Terms such as ‘elevated,’ 'high risk,’ 'abnormal,’ or ‘critical’ can be unsettling when presented without context.—
Malana VanTyler,
USA Today,
17 June 2026
-
Traffic on the Pike was not abnormal in any way.—
Mike Sullivan,
CBS News,
16 June 2026
Adjective
-
Excluding the special cases of meteor showers, a viewer on the ground will see only about five or so sporadic meteors per hour on average, which isn’t terribly many.—
Phil Plait,
Scientific American,
12 June 2026
-
While a bus was lit on fire in Belfast, a police car in the town of Portadown was set ablaze as sporadic pockets of disorder broke out into other parts of Northern Ireland.—
Olivia-Anne Cleary,
Time,
10 June 2026
Adjective
-
Stowers getting regular first base work Stowers is beginning to produce after his season got off to an uneven start following to a pair of hamstring injuries in spring training.—
Jordan McPherson,
Miami Herald,
18 June 2026
-
The president says market gains helped guide his push to reach a deal with Iran, even as critics warn that stocks are an uneven measure of national interest.—
Cat Zakrzewski,
Washington Post,
18 June 2026
Adjective
-
Frequently informal and poorly regulated, both virgin and recycled polyester supply chains can expose workers to severe human-rights risks, including harassment, violence and abuse.—
Jasmin Malik Chua,
Footwear News,
17 June 2026
-
Some of her success with collaborators seems to have come down to luck and an eye for talent, as in the case of the still-up-and-coming Elswit and Oppewall, who served as her informal producers during filming.—
Elaina Patton,
IndieWire,
16 June 2026
Adjective
-
In some studies, gloves not changed between tasks had higher bacterial counts and could transfer germs just as easily as ungloved hands, underscoring the need for frequent changing and proper hand hygiene.—
Evan Moore
December 19,
Charlotte Observer,
19 Dec. 2025
Noun
-
After launching in 2022 as a live event outdoors at Lincoln Center, the guerrilla awards show reached TV screens for the first time last year.—
Senior Television,
Los Angeles Times,
11 June 2026
-
The selective application of trafficking claims The narco-terrorism label was selectively applied not only to left-wing guerrillas but to the two communist governments in Latin America.—
Michelle D. Paranzino,
The Conversation,
11 June 2026
Adjective
-
While there are certain products that can be used across different hair textures, lengths, curl patterns, thicknesses, colors (natural and unnatural), and needs, hair products are often created with specific consumers in mind.—
Jailynn Taylor,
Allure,
13 June 2026
-
This is fast enough for the robot to react to environmental changes in real time without making its motions feel jerky or unnatural.—
Lee-Lean Shu,
Forbes.com,
11 June 2026
Adjective
-
Portable Power Station Deal Summer's here and that means backyard BBQs, camping trips, and the occasional blackout.—
John Mihaly,
PC Magazine,
18 June 2026
-
In Billie’s case, that consists mostly of neighborhood walks and the occasional hiking trail.—
Mack DeGeurin,
Popular Science,
18 June 2026
Cite this Entry
“Irregular.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/irregular. Accessed 19 Jun. 2026.
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