Not constituting a compound.

synonym: unmixed.

Roget 42: simple, uniform, of a piece [Fr.], homogeneous, single, pure, sheer, neat.    unmixed, unmingled^†, unblended, uncombined, uncompounded; elementary, undecomposed; unadulterated, unsophisticated, unalloyed, untinged^†, unfortified, pur et simple [Fr.]; incomplex^†.    free from, exempt from; exclusive.    ... show more