Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

20. Nonimitation — N. no imitation; originality; creativeness.

invention, creation. Adj. unimitated†, uncopied†; unmatched, unparalleled; inimitable &c 13; unique, original; creative, inventive, untranslated; exceptional, rare, sui generis uncommon [Lat.], unexampled. 20a. Variation — N. variation; alteration &c (change) 140. modification, moods and tenses; discrepance†, discrepancy. divergency &c 291; deviation &c 279; aberration; innovation. V. vary &c (change) 140; deviate &c 279; diverge &c 291; alternate, swerve. Adj. varied &c v.; modified; diversified &c 16.1.