tenacious
B2CEFR level
55/100Rarity: uncommon
NeutralRegister
General adjective
Holding firmly; persistent.
Her tenacious questioning finally cracked the story open.
Medicine adjective
Describing secretions that are thick, sticky and difficult to expectorate.
The tenacious secretions clung to the airways and were hard to clear.
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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