conscientious
B2CEFR level
25/100Rarity: fairly common
NeutralRegister
Wishing to do one's work thoroughly and well; guided by conscience.
A conscientious clerk, he flagged the discrepancy rather than quietly ignore it.
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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