† liˈbidinistObs.rare. [f. L. libīdin-, libīdo lust + -ist.] A lustful person; a lecher. 1628Feltham Resolves ii. [= i. in later edd.] lxxviii. 224 Nero would not beleeue, but all men were most foule Libidinists.1634Sir T. Herbert Trav. 198 This Ceremony..to Libidinists may seeme mirthful.