solipsism
C2CEFR level
78/100Rarity: rare
TechnicalRegister
The philosophical view that only one's own mind can be known to exist.
Taken to its logical extreme, solipsism leaves you unable to prove that anyone else is truly conscious.
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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