Synonyms For "Plain" :

1 syllable:

bare, chaste, dry, field, kick, knit, kvetch, mere, pure, quetch, sheer, spare, stark, stern, trim

2 syllables:

austere, champaign, complain, direct, homely, knit stitch, patent, plainly, severe, simple, sound off, tailored, unmingled, unmixed

3 syllables:

apparent, evident, featureless, literal, manifest, obvious, palpable, patently, unadorned, unpatterned, unvarnished, vanilla

4 syllables:

apparently, evidently, manifestly, obviously, unembellished, unpretentious

5 syllables:

inelaborate, undecorated, unelaborate, unmistakable, unornamented, unrhetorical