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

These dramatize Günter’s contentious but rewarding tutelage under Freud and his erratic marriage to one of Freud’s patients, a Jewish woman named Josine.

From The Wall Street Journal • Jun. 3, 2026

Despite Maggie’s erratic behavior, the city reporter emphasized, “she knew what she was talking about.”

From "American Spirits" by Barb Rosenstock

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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