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Synonyms

sporadic

American  
[spuh-rad-ik] / spəˈræd ɪk /
Sometimes sporadical

adjective

  1. (of similar things or occurrences) appearing or happening at irregular intervals in time; occasional.

    sporadic renewals of enthusiasm.

    Antonyms:
    continuous
  2. appearing in scattered or isolated instances, as a disease.

  3. isolated, as a single instance of something; being or occurring apart from others.

    Synonyms:
    unconnected, separate
  4. occurring singly or widely apart in locality.

    the sporadic growth of plants.


sporadic British  
/ spəˈrædɪk /

adjective

  1. occurring at irregular points in time; intermittent

    sporadic firing

  2. scattered; isolated

    a sporadic disease

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • sporadically adverb
  • sporadicalness noun
  • sporadicity noun
  • sporadism noun

Etymology

Origin of sporadic

First recorded in 1680–90; from Medieval Latin sporadicus, from Greek sporadikós, equivalent to sporad- (stem of sporás “strewn,” akin to sporá “sowing, seed”) + -ikos adjective suffix; spore, -ic

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.

After a year of the strike "with sporadic bin collections, and rubbish left on the streets", people were tired, she said.

From BBC • Mar. 11, 2026

They try to stay in touch with loved ones through phone calls and WhatsApp messages, but the secrecy around carrier movements means their communication with their families is sporadic and unpredictable.

From The Wall Street Journal • Feb. 21, 2026

And then, to the sound of sporadic laughter, the amplified voice sings a slightly altered version:

From Slate • Feb. 11, 2026

That’s still too pricey for most in a country where millions scrape by on sporadic income from street vending, domestic work, construction and other iterations of the informal economy.

From Los Angeles Times • Jan. 30, 2026

Wednesday morning, only sporadic outbursts punctuated quiet in the streets, but many were not convinced the trouble was over.

From "A Few Red Drops: The Chicago Race Riot of 1919" by Claire Hartfield