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KEY: Plain.
SYN: Level, even, flat, smooth, open, clear, unencumbered, unobstructed, uninterrupted, manifest, evident, obvious, unmistakable, simple, easy, natural, unaffected, homely, unsophisticated, open, unvarnished, unembellished, unreserved, artless.
ANT: Uneven, undulating, rugged, rough, abrupt, broken, confused, encumbered, obstructed, interrupted, questionable, uncertain, dubious, ambiguous, enigmatical, hard, abstruse, affected, fair, beautiful, sophisticated, artful, varnished, embellished.
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KEY: Plaintive.
SYN: Mournful, sorrowful, sad, doleful, melancholy, wailing, touching, moaning.
ANT: Joyous, exultant, glad, jubilant, cheerful, cheering, gladdening.
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KEY: Plan \n.\ Design, drawing, sketch, draft, scheme, groundplot, project, contrivance, stratagem, device, [See DESIGN], Plan \v.\