perseveration
C2CEFR level
88/100Rarity: very rare
TechnicalRegister
The uncontrollable repetition of a word, phrase or action beyond what is relevant.
His perseveration was evident as he returned to the same topic despite the changed question.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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