periodic

[peer-ee-od-ik] / ˌpɪər iˈɒd ɪk /

ADJECTIVE

at fixed intervals

Synonyms

STRONGEST

annual intermittent monthly occasional recurrent recurring regular repeated routine seasonal sporadic weekly yearly

STRONG

periodical

WEAK

alternate at various times centennial cyclic cyclical daily epochal every once in a while every so often fluctuating hourly infrequent isochronal isochronous on certain occasions on-again-off-again orbital perennial rhythmic serial spasmodic

Antonyms

STRONGEST

constant infrequent unusual

WEAK

continual irregular lasting permanent sporadic variable

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.

It requires periodic delimitation - the redrawing and reallocation of seats - after each census to reflect updated population figures.

From BBC • Apr. 16, 2026

While we all need periodic reminders that pierce through the monotony and horrors of the day, awe of nature and our fragile existence being paramount, we also need reminders that a better future is possible.

From Salon • Apr. 7, 2026

Some funds aimed at retail investors allow periodic redemptions up to a certain cap.

From The Wall Street Journal • Mar. 29, 2026

Bouma, working with Moira Jardine of the University of St Andrews, focused on an unusual class of M dwarfs known as complex periodic variables.

From Science Daily • Mar. 27, 2026

Throughout the nineteenth century, periodic waves of the disease sent more mortals than usual off to the world of spirits.

From "American Spirits" by Barb Rosenstock

Vocabulary lists containing periodic

Freak the Mighty

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Word Generation Science - Introductory Chemistry Concepts

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Essential English Vocabulary, List 3

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