Synonyms of plain

plain 1 of 3

adjective

ˈplān 

1

as in simple

free from all additions or embellishment

I like my hamburgers plain, with no ketchup or relish

just give us the plain facts and none of your snide comments

Synonyms & Similar Words

• simple
• unadorned
• naked
• bare
• undecorated
• unvarnished
• bald
• clean
• stripped
• unembellished
• unornamented
• plain-vanilla
• quiet
• honest
• restrained
• homely
• unsophisticated
• spartan
• modest
• elemental
• bleak
• earthy
• subdued
• natural
• stark
• unpretentious
• forthright
• divested
• austere
• muted
• inconspicuous
• conservative
• severe
• denuded
• minimalist
• unobtrusive
• understated
• toned (down)
• antiseptic
• sober
• au naturel

Antonyms & Near Antonyms

• fancy
• decorated
• loud
• gaudy
• showy
• ornamented
• garish
• flashy
• embellished
• adorned
• tawdry
• flamboyant
• ostentatious
• glitzy
• exaggerated
• swank
• florid
• lurid
• splashy
• elaborate
• ornate
• overwrought
• glittery
• extravagant
• baroque
• rococo
• dressed
• embroidered
• trimmed
• bedizened
• overdecorated
• arrayed
• bedecked
• decked-out
• overdone
• garnished
• appareled

2

as in pure

free from added matter

I'd prefer my pasta plain, not flavored with tomato or spinach or anything else

Synonyms & Similar Words

• pure
• fresh
• unadulterated
• straight
• neat
• undiluted
• unmixed
• refined
• absolute
• tried
• unalloyed
• fine
• purified
• clean
• filtered
• concentrated
• rendered
• untainted
• uncontaminated
• unpolluted
• undefiled
• uncorrupted
• strong
• clarified
• full-bodied
• uncombined
• taintless

Antonyms & Near Antonyms

• mixed
• impure
• contaminated
• adulterated
• diluted
• polluted
• spoiled
• alloyed
• soiled
• debased
• tainted
• corrupted
• compounded
• incorporated
• blended
• combined
• unclarified
• mingled
• intermixed
• joined
• intermingled
• defiled
• merged
• sullied
• amalgamated
• commingled
• fused
• linked
• fouled
• befouled
• besmirched
• conjoined
• united
• coalesced
• watered-down
• doctored
• cheapened

3

as in outspoken

free in expressing one's true feelings and opinions

their piano teacher is honest and plain, if not always tactful

Synonyms & Similar Words

• outspoken
• honest
• straightforward
• candid
• frank
• forthcoming
• direct
• straight
• vocal
• open
• forthright
• blunt
• unguarded
• plainspoken
• up-front
• out-front
• unreserved
• real
• openhearted
• unaffected
• earnest
• unpretending
• naive
• free-spoken
• artless
• guileless
• sincere
• ingenuous
• unpretentious
• foursquare
• innocent
• freehearted
• rude
• outgoing
• natural
• uninhibited
• gruff
• crusty
• bluff
• curt
• unrestrained
• brusque
• thoughtless
• abrupt
• vociferous
• undesigning
• unsubtle
• tactless
• sharp
• inconsiderate
• impertinent
• impolite
• unmannerly
• undiplomatic
• ungracious
• uncivil

Antonyms & Near Antonyms

• restrained
• quiet
• reserved
• laconic
• ambiguous
• inhibited
• reticent
• uncandid
• dissembling
• uncommunicative
• taciturn
• unforthcoming
• evasive
• circuitous
• equivocal
• diplomatic
• civil
• tactful
• polite
• politic
• courteous
• tight-lipped
• close-mouthed
• considerate

4

as in straightforward

going straight to the point clearly and firmly

a plain report on the current situation

Synonyms & Similar Words

• straightforward
• straight
• direct
• blunt
• honest
• candid
• forthright
• frank
• true
• earnest
• artless
• sincere
• foursquare
• outspoken
• unguarded
• sharp
• open
• plainspoken
• curt
• bluff
• unreserved
• gruff
• aboveboard
• uninhibited
• brusque
• abrupt
• openhearted
• tactless
• rude
• unrestrained
• truthful
• free-spoken
• inconsiderate
• impolite
• undiplomatic
• point-blank
• veracious

Antonyms & Near Antonyms

• indirect
• circuitous
• roundabout
• wordy
• verbose
• prolix
• civil
• restrained
• polite
• reserved
• lying
• inhibited
• tactful
• courteous
• erroneous
• deceitful
• circumlocutory
• mendacious
• false
• long-winded
• ambiguous
• untruthful
• misleading
• fallacious
• evasive
• equivocal
• hypocritical
• double-dealing
• two-faced

5

as in obvious

not subject to misinterpretation or more than one interpretation

let me make my meaning plain

Synonyms & Similar Words

• obvious
• evident
• apparent
• unmistakable
• clear
• straightforward
• distinct
• simple
• broad
• transparent
• visible
• lucid
• unambiguous
• decided
• manifest
• clear-cut
• perspicuous
• ringing
• unequivocal
• luminous
• bald
• pellucid
• crystal clear
• barefaced
• patent
• intelligible
• palpable
• bright-line
• comprehensible
• open-and-shut
• explicit
• understandable
• bald-faced
• noticeable
• tangible
• unambivalent
• nonambiguous
• luculent
• uncomplicated
• recognizable
• knowable
• digestible
• overt
• tidy
• clean-cut
• sensible
• cognizable
• observable
• appreciable
• undisguised
• self-explanatory
• self-evident
• comprehendible
• discernible
• black-and-white
• perceptible
• fathomable
• graspable
• readable
• legible
• trenchant
• cognoscible
• clean
• decipherable
• well-defined
• fair

Antonyms & Near Antonyms

• dark
• obscure
• ambiguous
• mysterious
• cryptic
• indistinct
• unclear
• enigmatic
• equivocal
• unintelligible
• clouded
• incomprehensible
• indecipherable
• unfathomable
• gray
• unknowable
• vague
• subtle
• imperceptible
• unapparent
• obfuscated
• unclarified
• nonobvious
• impalpable
• insensible
• sketchy
• indeterminate
• inappreciable
• cloudy
• misty
• indefinite
• nebulous
• slippery
• hazy
• murky
• imprecise
• noncommittal
• illegible
• gauzy
• unreadable
• indiscernible
• undecipherable

plain

2 of 3

adverb

as in openly

in an honest and direct manner

told her plain that he loved her

Synonyms & Similar Words

• straightforward
• openly
• plainly
• straight
• simply
• sincerely
• honestly
• straightforwardly
• abruptly
• directly
• frankly
• forthrightly
• sharply
• baldly
• foursquare
• bluntly
• candidly
• unreservedly
• bluffly
• rudely
• artlessly
• earnestly
• brusquely
• curtly
• truthfully
• unguardedly
• openheartedly
• gruffly
• inconsiderately
• tactlessly
• point-blank
• impolitely
• veraciously

Antonyms & Near Antonyms

• wordily
• politely
• verbosely
• tactfully
• diplomatically
• courteously
• civilly
• deceitfully
• falsely
• erroneously
• mendaciously
• untruthfully
• long-windedly
• indirectly
• hypocritically
• ambiguously
• insincerely
• fallaciously
• evasively
• equivocally
• circuitously

plain

3 of 3

noun

1

as in prairie

a broad area of level or rolling treeless country

the first settlers in that area lived on the vast plains in lonely log cabins

Synonyms & Similar Words

• prairie
• steppe
• grassland
• savanna
• pampa
• meadow
• veld
• moor
• tundra
• champaign
• heath
• campo
• lea
• field
• llano
• down(s)
• flat
• lowland
• plateau
• table
• floodplain
• bottomland
• upland
• tableland
• bottom

2

as in expanse

a wide space or area

the vast plains of snow-covered earth that seemed to stretch endlessly

Synonyms & Similar Words

• expanse
• expansion
• stretch
• sheet
• length
• distance
• extent
• reach
• breadth
• field
• waste
• spread
• territory
• scope
• domain
• depth
• spectrum
• sphere
• scale
• range
• extension
• compass
• void
• sweep
• gamut
• span
• amplitude
• latitude
• magnitude
• emptiness
• immensity

Synonym Chooser

How is the word plain distinct from other similar adjectives?

Some common synonyms of plain are candid, frank, and open. While all these words mean "showing willingness to tell what one feels or thinks," plain suggests outspokenness and freedom from affectation or subtlety in expression.

plain talk

When could candid be used to replace plain?

Although the words candid and plain have much in common, candid suggests expression marked by sincerity and honesty especially in offering unwelcome criticism or opinion.

a candid appraisal

When might frank be a better fit than plain?

In some situations, the words frank and plain are roughly equivalent. However, frank stresses lack of shyness or secretiveness or of evasiveness from considerations of tact or expedience.

frank discussions

How does the word open relate to other synonyms for plain?

Open implies frankness but suggests more indiscretion than frank and less earnestness than candid.

open in saying what they think

Example Sentences

Recent Examples of plain

Adjective

Spot treating fresh stains with a cloth or napkin dampened with plain water can often get rid of the problem. — Mary Marlowe Leverette, The Spruce, 9 Aug. 2026

Use plain language, name the value, and make a choice that supports both confidence and stability. — Tarot.com, The Orlando Sentinel, 9 Aug. 2026

Adverb

This can help prevent the patient from stumbling across information that’s difficult to understand, potentially upsetting, or just plain irrelevant to their own situation. — Nicole Pajer, PEOPLE, 28 July 2026

Natural Selection’s new-build camp Tawana is set amid Botswana’s Moremi Game Reserve, some 1,900 square miles of grassland and flood plain teeming with antelope and elephants, lions and hippos. — Laura Dannen Redman, Robb Report, 23 July 2026

Noun

Asturias is washed by the weather blowing in from the sea and protected from the oven of the country’s central plains by the Picos de Europa, the jagged mountain range that forms the region’s southern border. — Simon Willis, Travel + Leisure, 4 Aug. 2026

The Nazca Lines, ​enormous drawings and ⁠geometric figures etched into desert plains in the south of the country, are one of Peru’s main tourist destinations, attracting approximately ​100,000 annual visitors. — Joe Kottke, NBC news, 2 Aug. 2026