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.

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

Slot also produced another key tactical move by using Luis Diaz, a gifted but occasionally erratic winger, as a striker.

From BBC • May 30, 2026

Turner, labeled “Captain Outrageous” for his erratic behavior, had once been thought to have bipolar disorder.

From The Wall Street Journal • May 6, 2026

The 78-year-old Northern California woman is the third person to die in California during an erratic snake season.

From Los Angeles Times • Apr. 21, 2026

But mail service was erratic, which tested them.

From "The Woman All Spies Fear" by Amy Butler Greenfield

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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