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 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

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

“Better follow up and see what he's doin'.” The procession moved off sedately in King Pellinore’s direction, following his erratic course by the fresh tracks in the snow.

From "The Once and Future King" by T. H. White

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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