Synonyms of underpinning

underpinning 1 of 2

noun

ˈən-dər-ˌpi-niŋ 

1

as in basis

an immaterial thing upon which something else rests

the underpinnings of the theory have recently been called into question

Synonyms & Similar Words

• basis
• foundation
• bedrock
• cornerstone
• justification
• groundwork
• base
• root
• support
• framework
• premise
• ground
• core
• keystone
• theory
• footing
• warp
• essence
• infrastructure
• focus
• warp and woof
• bottom
• rationale
• assumption
• backbone
• thesis
• shore
• anchorage
• heart
• prop
• center
• substratum
• kernel
• warrant
• presumption
• bed
• mount
• substructure
• stay
• buttress
• brace
• presupposition
• bulwark
• supposition
• nucleus
• hub
• seat
• touchstone
• soul
• eye
• quintessence

2

as in support

a structure that holds up or serves as a foundation for something else

the underpinnings of the bridge were seriously damaged in the collision

Synonyms & Similar Words

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

underpinning

2 of 2

verb

present participle of underpin

as in sustaining

to hold up or serve as a foundation for

the central beliefs that underpin a free society

Synonyms & Similar Words

• sustaining
• supporting
• carrying
• bolstering
• upholding
• staying
• undergirding
• buttressing
• bracing
• underlying
• bearing
• propping (up)
• shoring (up)
• steadying
• trussing

Example Sentences

Recent Examples of underpinning

Noun

Having sought to upend the global maritime order — the underpinning of the global goods trade, energy flows, food supplies, and internet communications — China now seeks the trust of smaller countries to shape the digital one. — Andy Browne, semafor.com, 4 Aug. 2026

Otherwise, the underpinnings are perfectly sorted. — Utkarsh Sood june 27, New Atlas, 27 June 2026

Verb

While much is made of the Gulf’s domestic AI build-outs, the ambitious global deals show the region is also focused on securing a stake in the infrastructure underpinning the technology. — Kelsey Warner, semafor.com, 7 Aug. 2026

Xiaomi introduced the SkyNomad, and all-new Kunlun Platform, underpinning it at a world premiere last week. — New Atlas, 6 Aug. 2026