side effect
A2CEFR level
10/100Rarity: common
TechnicalRegister
An unwanted effect of a medicine that occurs alongside its intended therapeutic action.
Nausea is a common side effect in the first few weeks of taking this medication.
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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