Meaning of self-assumption in English:

self-assumption

Pronunciation /ˌsɛlfəˈsʌm(p)ʃn/

noun

  • 1Presumption, arrogance.

  • 2Chiefly with of. The taking of a power, right, responsibility, designation, etc., for oneself, typically without authority; appropriation.

Origin

Early 17th century; earliest use found in William Shakespeare (1564–1616), playwright and poet. From self- + assumption.