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sporadic

adjective
 
 
/spəˈræd.ɪk/

Definition

happening sometimes; not regular or continuous: sporadic gunfire a sporadic electricity supply More than 100 people have been killed this year in sporadic outbursts of ethnic violence. → Synonym occasionalFrequency and regularity - general words sporadically
 
 
/-ɪ.kəl.i/ adverb
Frequency and regularity - general words
(Definition of sporadic adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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