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

In the latest request, Virginia argues that the state Supreme Court misread federal election law and also rejected the plain text of the state constitution’s definition of an election when blocking the new map. —Maureen Groppe, USA Today, 11 May 2026

The resulting material has mechanical properties similar to those of plain PCL films. —New Atlas, 11 May 2026

Adverb

There’s an almost-friendship-ending rift over husbands (Brent Thiessen is Cee Cee’s, a cool-guy theater director; Ben Jacoby is Bertie’s, a rich jerk) that feels deeply dated and, in the context of the women’s tell-each-other-everything friendship, just plain weird. —Sara Holdren, Vulture, 23 Apr. 2026

Young Michael may have seemed strange, or just plain different, to kids his own age, but what about the adult Michael, whose professional life took him outside the family orbit and into offices, studios, and night clubs? —Richard Brody, New Yorker, 23 Apr. 2026

Noun

Communities like Fort Collins, Greeley, and parts of the northeast plains may see very little rainfall—generally less than a quarter inch. —Callie Zanandrie, CBS News, 29 Apr. 2026

As an update, Baker said in April that the city gets most of its drinking water about 3 miles away from the Sunflower boundary near the flood plain. —Taylor O'Connor, Kansas City Star, 27 Apr. 2026