Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Plain" Definition
noun
A broad level expanse, as a part of the sea floor or a lunar mare.
Source: American Heritage Dictionary
An extensive, level, usually treeless area of land.
Source: American Heritage Dictionary
Something free of ornamentation or extraneous matter.
Source: American Heritage Dictionary
An extensive area of level or rolling treeless country.
Source: Merriam-Webster
A broad unbroken expanse.
Source: Merriam-Webster
adjective
Archaic Having no visible elevation or depression; flat; level.
Source: American Heritage Dictionary
Common in rank or station; average; ordinary: a plain man.
Source: American Heritage Dictionary
Free from obstructions; open; clear: in plain view.
Source: American Heritage Dictionary
Lacking beauty or distinction: a plain face.
Source: American Heritage Dictionary
Marked by little or no ornamentation or decoration.
Source: American Heritage Dictionary
adverb
Informal Clearly; simply: plain stubborn.
Source: American Heritage Dictionary
In a plain manner without obscurity or ambiguity .
Source: Merriam-Webster