nonce-wd. [f. EXPERT sb. + -ISM.] The quality of being an expert.

1

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.

2

1886.  Sat. Rev., 30 Jan., 150/2. The same right of speech which Mr. Arch later, and Sir Richard Temple earlier, could claim—the right of expertism.

3