sweat of the brow
C1CEFR level
65/100Rarity: rare
TechnicalRegister
The discredited theory that sheer labour and expense in compiling a work, absent any creativity, can ground copyright.
A bare alphabetical directory won't qualify; sweat of the brow isn't enough for originality.
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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