persistent

[per-sis-tuhnt, -zis-] / pərˈsɪs tənt, -ˈzɪs- /

ADJECTIVE

determined; continuous

Synonyms

STRONGEST

constant continual endless enduring incessant insistent perpetual relentless repeated resolute steadfast steady stubborn tenacious unrelenting unremitting

WEAK

assiduous bound bound and determined bulldogged dogged firm fixed immovable in for long haul indefatigable interminable like bad penny never-ending obdurate obstinate perseverant persevering persisting pertinacious sticky tireless unflagging unshakable

Antonyms

STRONGEST

broken ceasing disloyal ending inconstant intermittent interrupted merciful stopping sympathetic temporary terminable unstable unsteady untrustworthy weak yielding

WEAK

lazy relenting surrendering

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 crew were candid about a persistent blockage in the toilet's primary vent line, saying it got "clogged up".

From BBC • Apr. 16, 2026

The heat wave is deep, persistent and widespread, spanning from roughly San Francisco to the Mexican border.

From Los Angeles Times • Apr. 16, 2026

Even excluding energy costs and food prices, the panel anticipates persistent price pressures.

From The Wall Street Journal • Apr. 15, 2026

Consumers’ resilience—marked by measures such as healthy credit and spending patterns—has been notable and persistent for several quarters.

From Barron's • Apr. 15, 2026

For Holmes, despite the persistent deep cold of the first two months of 1893, things never looked better.

From "The Devil in the White City" by Erik Larson

Vocabulary lists containing persistent

100 Words Every Middle Schooler Should Know

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List 3

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The Absolutely True Diary of a Part-Time Indian

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