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Definitions

irregular

[ih-reg-yuh-ler] / ɪˈrɛg yə lər /
ADJECTIVE
random, variable
Synonyms
STRONGEST
capricious erratic intermittent jerky sporadic uneven unreliable
STRONG
aberrant eccentric faltering shifting weaving
WEAK
aimless casual changeable designless desultory disconnected discontinuous fitful fluctuating fragmentary haphazard hit-or-miss inconstant indiscriminate infrequent nonuniform occasional out of order patchy purposeless recurrent shaky spasmodic uncertain unconsidered unmethodical unpunctual unsettled unsteady unsystematic up and down
Antonyms
STRONGEST
constant continuous dependable regular reliable smooth steady
STRONG
normal
WEAK
common conventional even flat level methodical standard systematic usual
ADJECTIVE
abnormal, peculiar
Synonyms
STRONGEST
capricious improper inappropriate strange unorthodox unusual
STRONG
aberrant deviant eccentric singular
WEAK
anomalous atypical different disorderly divergent exceptional extraordinary immoderate inordinate odd off-key quirky unconventional unique unnatural unofficial unsuitable
Antonyms
STRONGEST
appropriate common familiar fitting normal proper regular standard suitable usual
STRONG
ordinary
WEAK
conventional even flat level methodical smooth systematic
ADJECTIVE
bumpy, uneven
Synonyms
STRONGEST
asymmetrical craggy elliptical jagged lumpy unbalanced
STRONG
aberrant bent eccentric rough variable wobbly
WEAK
amorphous broken cockeyed crooked devious disproportionate elliptic hilly lopsided meandering not uniform notched off-balance off-center out of proportion pitted protuberant scarred serrate serrated unaligned unequal unsymmetrical zigzagged
Antonyms
STRONGEST
even smooth
STRONG
normal regular
WEAK
common conventional flat level methodical standard systematic usual

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 earlier interviews with Barron’s, CEO Alan Baratz has warned of so-called lumpiness in the results resulting from irregular infusions of revenue.

From Barron's • May 12, 2026

When sliced, each irregular disk holds triterpenoids and p-couramic acid — panacea to reduce inflammation, with potential anti-cancer properties.

From Salon • May 9, 2026

Recent surveys also suggest that Tisza party voters, like Fidesz voters before them, are worried about irregular migration.

From BBC • May 8, 2026

Among the three galaxies, one clearly rotates, another shows irregular structure, and the third shows no rotation but strong random motion of its stars.

From Science Daily • May 7, 2026

It almost looked like a dirty, tangled net, but it was too irregular for netting.

From "The Name of the Wind" by Patrick Rothfuss

Vocabulary lists containing irregular

TEKS ELAR Academic Vocabulary List (5th-7th grades)

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List 8

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Keystone Exams: English Composition Glossary

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