nonce-wd. [f. EXPERT sb. + -ISM.] The quality of being an expert.
1875. J. P. Gray, in Amer. Jrnl. Insanity, April, 461. It [the term impulse] has done more to bring the profession into just contempt than any other term of speculative expertism which has obtained foothold, under the guise and protection of science.
1886. Sat. Rev., 30 Jan., 150/2. The same right of speech which Mr. Arch later, and Sir Richard Temple earlier, could claimthe right of expertism.