recrudescence
C2CEFR level
93/100Rarity: very rare
FormalRegister
General noun
The recurrence of something undesirable, such as a disease or unrest, after a period of dormancy.
Historians warned of a recrudescence of the sectarian violence that had scarred the previous decade.
Medicine noun
The renewed appearance of disease after a period of quiescence.
Incomplete clearance of blood-stage parasites can lead to a recrudescence of malarial fever weeks later.
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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