1879 9 191 A world in which one man in a thousand is probably a crypto-lunatic, anxious, above all things, for a supreme sensation.
1889 16 Nov. M. Thiers..allowed many thousand persons, half of them crypto-lunatics, to be executed.
1931 J. Langdon-Davies xi. 268 One effect of Jeans and Eddington is likely to be an increased interest in entropy on the part of lunatics and crypto-lunatics.