dysdiadochokinesia
C2CEFR level
98/100Rarity: very rare
TechnicalRegister
An impaired ability to perform rapid alternating movements, characteristic of cerebellar dysfunction.
Asked to rapidly pronate and supinate her hand, she showed marked dysdiadochokinesia on the left, pointing to an ipsilateral cerebellar lesion.
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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