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English definition of “tautology”

tautology

noun [C or U] uk   /tɔːˈtɒl.ə.dʒi/ us    /tɑːˈtɑː.lə-/
the unnecessary and usually unintentional use of two words to express one meaningSaying againSaying and uttering
tautological
adjective uk   /ˌtɔː.təˈlɒdʒ.ɪ.kəl/ us    /ˌtɑː.t̬əˈlɑː.dʒɪ-/
Saying againSaying and uttering
tautologically
adverb uk   /ˌtɔː.təˈlɒdʒ.ɪ.kəl.i/ us    /ˌtɑː.t̬əˈlɑː.dʒɪ-/
Saying againSaying and uttering
(Definition of tautology from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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