ethnologizev.

1867 N. Amer. Rev. Oct. 542 If our author will not allow the etymologists to ethnologize, so neither will he admit that peculiar mental and moral characteristics constitute an evidence of ethnic unity.

1949 A. Lomax in Sat. Rev. Lit. (U.S.) 28 May 44/3 Burly Bill Fenton has spent so much time ethnologizing on the reservation of the Five Nations at Allegheny, New York, that the people accept him as an Indian.

2010 G. G. Stroumsa New Sci. i. 15 Those monks, who have often been called the first ethnologists (but whom we should rather describe as ‘ethnologizing’, as both their approach and their instruments were directly linked to their missionary role).