1. (v. i.) To lament; to bewail; to complain.

2. (v. t.) To lament; to mourn over; as, to plain a loss.

3. (superl.) Without elevations or depressions; flat; level; smooth; even. See Plane.

4. (superl.) Open; clear; unencumbered; equal; fair.

5. (superl.) Not intricate or difficult; evident; manifest; obvious; clear; unmistakable.

6. (superl.) Void of extraneous beauty or ornament; without conspicuous embellishment; not rich; simple.

7. (superl.) Not highly cultivated; unsophisticated; free from show or pretension; simple; natural; homely; common.

8. (superl.) Free from affectation or disguise; candid; sincere; artless; honest; frank.

9. (superl.) Not luxurious; not highly seasoned; simple; as, plain food.

10. (superl.) Without beauty; not handsome; homely; as, a plain woman.

11. (superl.) Not variegated, dyed, or figured; as, plain muslin.

12. (superl.) Not much varied by modulations; as, a plain tune.

13. (adv.) In a plain manner; plainly.

14. (a.) Level land; usually, an open field or a broad stretch of land with an even surface, or a surface little varied by inequalities; as, the plain of Jordan; the American plains, or prairies.

15. (n.) A field of battle.

16. (v.) To plane or level; to make plain or even on the surface.

17. (v.) To make plain or manifest; to explain.

Attic Bohemian Ciceronian Lebensraum Mickey Mouse Spartan abrupt absolute absolutely affable agricultural region air space all-embracing all-encompassing all-out all-pervading apparent arable land articulate artless ascetic audible austere back country bald bare baseborn basic beautiless below the salt billiard table black belt blemished blotted bluff blunt born born yesterday bowling green broad broad-based brusque cacophonic cacophonous campestral campestrian campo candid casual champaign chaste cheerful childlike citrus belt classic classical clean clean-cut clear clear as crystal clear as day clear space clear-cut clearance clearing cockney coherent colorless comfortable common commonplace comprehensive confiding congenital connected consistent conspicuous consummate contrastive cordial corn belt cotton belt countryside cozy crisp crystal-clear crystalline cushy dead flat dead level deep-dyed defaced defined definite degage desert direct discernible discreet disfigured distant prospect distinct distinctive down downright drab dry dull dust bowl dyed-in-the-wool dysphemistic dysphemized earth easy easy as pie easygoing effortless egregious elegant elementary empty view esplanade essential even everyday evident exhaustive explicit express facile familiar farm belt farm country farmland featureless finished flat flatland flattened floor flush folksy forthright frank frankhearted free free and easy free-speaking free-spoken free-tongued friendly fruit belt fundamental garden garden-variety genuine glade glaring glib graceful gracile gracious graphic grass roots grassland grazing region ground guileless haymish hearable heart-to-heart heath hi-fi high-fidelity highlands homaloid homaloidal homelike homely homespun homey homish homogeneous honest horizontal horizontal axis horizontal fault horizontal line horizontal parallax horizontal plane horizontal projection household humble humble-looking humble-visaged humblest humdrum ill-favored in focus indisputable indivisible indubitable inelegant informal ingenu ingenuous inglorious innocent innocuous insipid intelligible intensive intimate irreducible irregular irretrievably irrevocably lean least ledge legible level level line level plane light limpid living space llano loose loud and clear low lowborn lowbred lowest lowlands lowliest lowly lucid luminous manifest marred matter-of-fact mead meadows and pastures mean mean sea level mere modest monolithic moor moorland moors mundane muted