contagion
B2CEFR level
50/100Rarity: uncommon
TechnicalRegister
Medicine noun
The spread of disease by close contact.
Isolation wards limit contagion.
Business noun
The spread of a financial or currency crisis from one country to others.
The Thai baht's collapse triggered contagion that swept across East Asia.
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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