expertism

[ ek-sper-tiz-uh m ]
/ ˈɛk spərˌtɪz əm /

noun

expertness or skill, especially in a specific field.

Origin of expertism

First recorded in 1885–90; expert + -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019