Synonyms of bolster

bolster 1 of 2

verb

1

as in to sustain

to hold up or serve as a foundation for

used additional beams to bolster the ceiling

Synonyms & Similar Words

• sustain
• support
• carry
• uphold
• stay
• buttress
• underpin
• brace
• bear
• undergird
• shore (up)
• steady
• prop (up)
• underlie
• truss

2

as in to reinforce

to provide evidence or information for (as a claim or idea)

a couple of tournament wins would bolster the extravagant claims that have been made on behalf of the young golfer

Synonyms & Similar Words

• reinforce
• prove
• support
• buttress
• corroborate
• confirm
• establish
• back
• substantiate
• verify
• shore (up)
• validate
• affirm
• avouch

Antonyms & Near Antonyms

• undermine
• weaken
• undercut

bolster

2 of 2

noun

as in arch

Related Words

• arch
• bracket
• pillar
• cantilever
• column
• bearing
• support
• pedestal
• girder
• stand
• mounting
• reinforcement
• peg
• mount
• pilaster
• shore
• crutch
• stake
• prop
• spur
• shoring
• buttress
• strut
• foundation
• brace
• truss
• stay
• post
• underpinning
• frame
• base
• stanchion
• stilt

Example Sentences

Recent Examples of bolster

Verb

Prosecutors say the evidence collected during that examination corroborated Doe’s description and bolstered his credibility. — Nate Gartrell, Mercury News, 27 July 2026

In relocating to Philadelphia, the four-time champion will bolster an already formidable Eastern Conference slate, which in turn should help boost the back ends of the national doubleheaders on NBC and ESPN. — Anthony Crupi, Sportico.com, 27 July 2026

Noun

The 16-way adjustable sport seats are standard, while performance seats shelled in carbon fiber—presenting more aggressive thigh and shoulder bolsters—are optionally available. — Bradley Iger, Robb Report, 8 May 2026

The blade is made from high-carbon 440 stainless steel, the handle is magnolia, and the bolster is crafted from natural horn. — Jesse Raub, Bon Appetit Magazine, 1 May 2026