Definitions

erratic

[ih-rat-ik] / ɪˈræt ɪk /

ADJECTIVE

unpredictable; wandering

Synonyms

STRONGEST

abnormal arbitrary bizarre capricious eccentric inconsistent irregular mercurial uncertain unreliable unstable unusual volatile wayward weird whimsical

WEAK

aberrant anomalous changeable desultory devious dicey directionless dubious fitful flaky fluctuant idiosyncratic iffy incalculable inconstant meandering nomadic oddball peculiar planetary rambling roving shifting spasmodic strange stray undirected unnatural vagarious variable

Antonyms

STRONGEST

calm common normal reasonable regular sensible stable standard steadfast steady unchanging usual

WEAK

certain consistent definite dependable predictable reliable sure

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.

The rapper has since apologised for his antisemitism and said his erratic behaviour is partly due to previous diagnoses of autism and bipolar disorder.

From BBC • Jun. 10, 2026

The company blamed the increase on erratic weather that created more dried vegetation.

From Los Angeles Times • Jun. 9, 2026

While astronomers and space scientists were initially skeptical about the planet nine theory, there has been mounting evidence thanks to increasingly powerful observations that the orbits of trans-Neptunian objects are indeed erratic.

From Science Daily • Jun. 9, 2026

Both rates rose in the month, and both groups have seen more erratic employment trends this year.

From Barron's • May 22, 2026

At the end of September I started back toward Devon on the jammed, erratic trains of September, 1942.

From "A Separate Peace" by John Knowles

Vocabulary lists containing erratic

To Kill a Mockingbird

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List 1

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"To Kill a Mockingbird" by Harper Lee, Chapters 1–6

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