Dictionary.com

plain

1
[ pleyn ]
/ pleɪn /
Save This Word!
See synonyms for: plain / plains / plainly / plainness on Thesaurus.com

adjective, plain·er, plain·est.

adverb

clearly and simply: He's just plain stupid.

noun

an area of land not significantly higher than adjacent areas and with relatively minor differences in elevation, commonly less than 500 feet (150 meters), within the area.
The Plains. Great Plains.

QUIZZES

QUIZ YOURSELF ON THE 12 TYPES OF VERB TENSES!

Loosen up your grammar muscles because it’s time to test your knowledge on verb tenses!
Question 1 of 6
The verb tenses can be split into which 3 primary categories?

Meet Grammar Coach

Write or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing

Meet Grammar Coach

Improve Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of plain

1
1250–1300; Middle English (adj., adv., and noun) <Old French (adj. and noun) <Latin plānus flat, level, plānum flat country

synonym study for plain

10. See homely.

OTHER WORDS FROM plain

plainly, adverbplainness, noun

WORDS THAT MAY BE CONFUSED WITH plain

plain , plan, plane

Definition for plain (2 of 2)

plain2
[ pleyn ]
/ pleɪn /

verb (used without object) British Dialect.

to complain.

Origin of plain

2
1250–1300; Middle English plei(g)nen<Old French plaign-, stem of plaindre<Latin plangere to beat (the breast, etc.), lament; akin to Greek plḗssein to strike
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use plain in a sentence

British Dictionary definitions for plain (1 of 2)

plain1
/ (pleɪn) /

adjective

noun

adverb

(intensifier)just plain tired
See also plains

Derived forms of plain

plainly, adverbplainness, noun

Word Origin for plain

C13: from Old French: simple, from Latin plānus level, distinct, clear

British Dictionary definitions for plain (2 of 2)

plain2
/ (pleɪn) /

verb

a dialect or poetic word for complain

Word Origin for plain

C14 pleignen, from Old French plaindre to lament, from Latin plangere to beat
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for plain

plain
[ plān ]

An extensive, relatively level area of land. Plains are present on all continents except Antarctica and are most often located in the interior regions. Because they can occur at almost any altitude or latitude, plains can be humid and forested, semiarid and grass-covered, or arid.
A broad, level expanse, such as an area of the sea floor or a lunar mare.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Idioms and Phrases with plain

plain

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
FEEDBACK