Search Dictionary
Definition of plain

plain

/pleɪn/
plain

Adverb:plainly
•
Plural:plains
JUMP TO:

plain Lexical Profile

plain Game Scores & Validity

• adjective

1

Not decorated or elaborate; simple or basic in character, design, or appearance.

Example

"She wore a plain white blouse with no jewelry to the interview."


2

Easy to perceive or understand; clear, obvious, or unmistakable.

Example

"The warning signs were written in plain English so that every visitor could understand them."


3

Expressed directly and candidly without evasion, flattery, or disguise.

Example

"Let me be plain with you about the financial risks involved in this venture."


4

Lacking striking beauty or distinction in physical appearance; ordinary-looking.

Example

"In the novel, the heroine describes herself as a plain, unassuming governess."

Synonyms
View all synonyms for plain
Antonyms
View all antonyms for plain

• noun

1

A large expanse of flat, relatively treeless land with low relief, typically found in continental interiors or along coasts.

Example

"Herds of bison once roamed freely across the vast grassy plains of North America."


2

A basic knitting stitch produced by passing the yarn from the back to the front of the fabric; a knit stitch.

Example

"The scarf pattern alternates between rows of plain and purl to create a ribbed texture."

Synonyms
View all synonyms for plain
Antonyms
View all antonyms for plain

• adverb

1

Simply; unmistakably; utterly (used informally for emphasis before an adjective or noun).

Example

"Leaving the keys inside the locked car was just plain careless."


2

In a clear, direct, or intelligible manner.

Example

"Speak plain so that everyone in the council chamber can understand your proposal."

Synonyms
View all synonyms for plain
Antonyms
View all antonyms for plain

Word Nuance & Usage

Frequently confused with its homophone 'plane'; 'plain' refers to flat land or something simple and unadorned, whereas 'plane' refers to a flat geometric surface, an aircraft, or a woodworking tool.

• Rhymes for plain

Word Origin & Etymology

Borrowed from Old French 'plain', from Latin 'planus' meaning 'flat, level, or clear', derived from the Proto-Indo-European root *pele- meaning 'flat' or 'to spread'.

Cite this Entry


Wordmom. (2026). Definition of Plain. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/plain
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Dictionary & Reference
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.