Synonyms and related words :
absolute, austere, bare, basic, chaste, elementary, essential, fundamental, homely, homespun, homogeneous, indivisible, irreducible, just, monolithic, of a piece, only, plain, primal, primary, pure, pure and simple, scant, severe, sheer, simon-pure, simple, single, spare, stark, unadorned, uncluttered, undifferenced, undifferentiated, undiluted, unenhanced, uniform, unmitigated, unmixed