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.

Appeared in the April 7, 2026, print edition as 'Allies Are Worried They Are Tied to an Erratic U.S.'.

From The Wall Street Journal • Apr. 7, 2026

Erratic electricity supply made things worse, with daily power cuts lasting hours.

From BBC • Oct. 3, 2024

I settled on a quesadilla quest and tried one stuffed with carne asada from Erratic Tacos in the Beer Barn.

From Los Angeles Times • Apr. 16, 2024

Erratic eating patterns, including late-night meals, have been linked to weight gain and a greater risk of metabolic disease.

From Salon • Aug. 3, 2023

Erratic blocks, nature of. — of Greenland. — near Chichester. — in the Red Crag.

From The Student's Elements of Geology by Lyell, Charles, Sir

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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