ERRATIC Synonyms: 231 Similar and Opposite Words

Q: How is the word 'erratic' distinct from other similar adjectives?

Some common synonyms of erratic are eccentric , odd , outlandish , peculiar , quaint , singular , strange , and unique . While all these words mean "departing from what is ordinary, usual, or to be expected," erratic stresses a capricious and unpredictable wandering or deviating. // a friend's suddenly erratic behavior

Q: When is 'eccentric' a more appropriate choice than 'erratic'?

The words eccentric and erratic are synonyms, but do differ in nuance. Specifically, eccentric suggests a wide divergence from the usual or normal especially in behavior. // the eccentric eating habits of preschoolers

Q: When can 'odd' be used instead of 'erratic'?

The meanings of odd and erratic largely overlap; however, odd applies to a departure from the regular or expected. // an odd sense of humor

Q: When could 'outlandish' be used to replace 'erratic'?

The words outlandish and erratic can be used in similar contexts, but outlandish applies to what is uncouth, bizarre, or barbaric. // outlandish fashions of the time

Q: Where would 'peculiar' be a reasonable alternative to 'erratic'?

Although the words peculiar and erratic have much in common, peculiar implies a marked distinctiveness. // the peculiar status of America's first lady

Q: In what contexts can 'quaint' take the place of 'erratic'?

While in some cases nearly identical to erratic , quaint suggests an old-fashioned but pleasant oddness. // a quaint fishing village

Q: When might 'singular' be a better fit than 'erratic'?

In some situations, the words singular and erratic are roughly equivalent. However, singular suggests individuality or puzzling strangeness. // a singular feeling of impending disaster

Q: When would 'strange' be a good substitute for 'erratic'?

While the synonyms strange and erratic are close in meaning, strange stresses unfamiliarity and may apply to the foreign, the unnatural, the unaccountable. // a journey filled with strange sights

Q: When is it sensible to use 'unique' instead of 'erratic'?

The synonyms unique and erratic are sometimes interchangeable, but unique implies singularity and the fact of being without a known parallel. // a career unique in the annals of science

erratic

adjective

i-ˈra-tik

Definition of erratic

as in random

lacking a definite plan, purpose, or pattern so far your effort to land a summer job has been very erratic

Synonyms & Similar Words

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Antonyms & Near Antonyms

as in sporadic

lacking in steadiness or regularity of occurrence because of your erratic attendance at practice, you're in danger of being cut from the team

Synonyms & Similar Words

Antonyms & Near Antonyms

as in changing

not staying constant business at the fast-food restaurant has been so erratic lately that the manager never knows how much staff to have on hand

Synonyms & Similar Words

Antonyms & Near Antonyms

as in bizarre

different from the ordinary in a way that causes curiosity or suspicion the animal's erratic behavior made her wonder if it was ill

Synonyms & Similar Words

Antonyms & Near Antonyms

Synonym Chooser

How is the word erratic distinct from other similar adjectives?

Some common synonyms of erratic are eccentric, odd, outlandish, peculiar, quaint, singular, strange, and unique. While all these words mean "departing from what is ordinary, usual, or to be expected," erratic stresses a capricious and unpredictable wandering or deviating.

a friend's suddenly erratic behavior

When is eccentric a more appropriate choice than erratic?

The words eccentric and erratic are synonyms, but do differ in nuance. Specifically, eccentric suggests a wide divergence from the usual or normal especially in behavior.

the eccentric eating habits of preschoolers

When can odd be used instead of erratic?

The meanings of odd and erratic largely overlap; however, odd applies to a departure from the regular or expected.

an odd sense of humor

When could outlandish be used to replace erratic?

The words outlandish and erratic can be used in similar contexts, but outlandish applies to what is uncouth, bizarre, or barbaric.

outlandish fashions of the time

Where would peculiar be a reasonable alternative to erratic?

Although the words peculiar and erratic have much in common, peculiar implies a marked distinctiveness.

the peculiar status of America's first lady

In what contexts can quaint take the place of erratic?

While in some cases nearly identical to erratic, quaint suggests an old-fashioned but pleasant oddness.

a quaint fishing village

When might singular be a better fit than erratic?

In some situations, the words singular and erratic are roughly equivalent. However, singular suggests individuality or puzzling strangeness.

a singular feeling of impending disaster

When would strange be a good substitute for erratic?

While the synonyms strange and erratic are close in meaning, strange stresses unfamiliarity and may apply to the foreign, the unnatural, the unaccountable.

a journey filled with strange sights

When is it sensible to use unique instead of erratic?

The synonyms unique and erratic are sometimes interchangeable, but unique implies singularity and the fact of being without a known parallel.

a career unique in the annals of science

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of erratic Such erratic moves have become typical since the United States and Israel attacked Iran in late February, which led to the closure of the Strait of Hormuz and kept much of the world’s oil pent up in the Middle East. — Stan Choe, Los Angeles Times, 11 Aug. 2026 But the Cruise could possibly have noticed the pedestrian in the crosswalk, who was acting in an erratic manner. — Brad Templeton, Forbes.com, 10 Aug. 2026 Winds of that strength start to present a greater risk of erratic wildfire behavior and spread. — Mary Gilbert, CNN Money, 6 Aug. 2026 During the first 10 minutes of the workout, its heart rate readings seemed a bit erratic but normalized afterward. — Andrew Gebhart, PC Magazine, 5 Aug. 2026 See All Example Sentences for erratic

Recent Examples of Synonyms for erratic

Adjective

Those reactions can look like freak weather, but the judgment underneath them isn’t random.

— ESMT Berlin, Forbes.com, 7 Aug. 2026
In partnership with research firm ETC Institute, the city also mailed surveys to a random sample of at least 500 households across Elgin.

— Mike Danahey, Chicago Tribune, 7 Aug. 2026

Definition of random

Adjective

Sporadic attacks risk largely blocking the waterway In the Strait of Hormuz, Iran has shown that even sporadic attacks on ships can be enough to effectively close a critical waterway by driving up risks and insurance premiums.

— Fatma Khaled, Chicago Tribune, 8 Aug. 2026
The Strait of Hormuz — which handled around one-fifth of global oil supply before the war — has seen traffic drop to a trickle with sporadic increase in ship transits on positive headlines.

— Anniek Bao, CNBC, 3 Aug. 2026

Definition of sporadic

Adjective

Years earlier at her former lab in Ohio, chromosomes in mouse eggs and embryos began dividing in bizarre ways, creating the kinds of genetic errors that can lead to Down syndrome and other chromosomal disorders.

— Sandee LaMotte, CNN Money, 7 Aug. 2026
Her videos were outrageous and conspiratorial, and the more elaborate and bizarre her stories became, the more people online were drawn to her.

— Zander Sherman, Rolling Stone, 7 Aug. 2026

Definition of bizarre

Adjective

Construction vehicles beeped and chugged, and the intermittent buzz of saws mixed with the clang of heavy equipment.

— Matthew Adams, Fort Worth Star-Telegram, 13 Aug. 2026
Last Friday, the American Society of Health-System Pharmacists’ published their most recent shortage update list naming the brands of estradiol patches on back order, intermittent back order, as well as those that are currently available.

— Emily Cegielski, Flow Space, 13 Aug. 2026

Definition of intermittent

Adjective

Bohm has endured an uneven campaign, showcasing both encouraging offense and periods of struggle, raising concerns about his viability in a contract year.

— Peter Chawaga, Forbes.com, 9 Aug. 2026
Fans of celebrity bald eagle Jackie are again grappling with troubling news about her health, the latest downturn in an uneven recovery since her rescue near Big Bear Lake last month.

— Lila Seidman, Los Angeles Times, 8 Aug. 2026

Definition of uneven

Adjective

Investigators later ruled out trains and power lines as possible causes — and traced the fire’s point of origin to the same spot Child witnessed the man’s strange behavior.

— Cindy Von Quednow, CNN Money, 10 Aug. 2026
And Dad actually makes an uncredited vocal cameo on one of the album’s more blessedly strange tracks.

— Chris Willman, Variety, 9 Aug. 2026

Definition of strange

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errant

erratic

erratically

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“Erratic.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/erratic. Accessed 14 Aug. 2026.

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Synonyms of erratic

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