Synonyms of sustainable

sustainable

adjective

sə-ˈstā-nə-bəl 

1

as in justifiable

capable of being defended with good reasoning against verbal attack

a line of argument that is probably not sustainable in a public forum against skilled debaters

Synonyms & Similar Words

• justifiable
• viable
• acceptable
• legitimate
• maintainable
• supportable
• defendable
• rational
• defensible
• tenable
• reasonable
• sensible
• allowable
• verifiable
• admissible
• unobjectionable
• well-grounded
• provable
• explainable
• explicable
• warrantable
• passable
• exceptionable
• confirmable

Antonyms & Near Antonyms

• untenable
• unjustifiable
• irrational
• ridiculous
• unsustainable
• absurd
• extreme
• unreasonable
• illogical
• unsound
• indefensible
• outrageous
• unacceptable
• objectionable
• insupportable
• unfounded
• inexplicable
• groundless
• unexplainable

2

as in verifiable

capable of being proven as true or real

has no sustainable claim to the property without a deed or some other document

Synonyms & Similar Words

• verifiable
• supportable
• demonstrable
• empirical
• confirmable
• defensible
• justifiable
• provable
• documentable
• checkable
• excusable
• warrantable
• certifiable
• alleged
• well-founded
• presumed
• assumed
• vindicable
• guessed
• suspected
• conjectured
• surmised

Antonyms & Near Antonyms

• unsustainable
• unsupportable
• insupportable
• unverifiable
• unprovable
• debatable
• indemonstrable
• disputable
• refutable
• disprovable

3

as in endurable

capable of being endured

the general didn't think that such heavy casualties could be sustainable for much longer

Synonyms & Similar Words

• endurable
• sufferable
• tolerable
• supportable
• acceptable
• bearable
• survivable
• livable
• adequate
• satisfactory
• allowable
• reasonable
• permissible
• admissible

Antonyms & Near Antonyms

• intolerable
• painful
• bad
• terrible
• unbearable
• cruel
• horrible
• unfortunate
• awful
• vicious
• unacceptable
• harsh
• dire
• appalling
• hideous
• shocking
• dreadful
• monstrous
• gruesome
• vile
• wretched
• rotten
• ghastly
• horrifying
• horrid
• intense
• acute
• extreme
• nightmarish
• horrendous
• frightful
• grisly
• macabre
• lurid
• agonizing
• unsupportable
• nasty
• harrowing
• excruciating
• insupportable
• unendurable
• insufferable
• offensive
• torturous
• deplorable
• repugnant
• repulsive
• disgusting
• evil
• abhorrent
• revolting
• distasteful
• loathsome
• obnoxious
• sickening
• noxious
• heinous
• tormenting
• abominable
• unspeakable
• foul
• odious
• piercing
• nauseating

Example Sentences

Recent Examples of sustainable

The focus on women could also play a role in helping Vans return to sustainable growth, according to Jefferies analyst Blake Anderson. — Alexa Lomonaco, CNBC, 2 July 2026

Best of all, the most popular 2026 styles fuse elegance, minimalist design, and sustainable materials. — René Chávez Esparza, Glamour, 3 July 2026

Raw materials using fibers such as wool, angora, mohair, linen, silk and cashmere offer brands compelling sustainable materials to use for their products and create the latest trends within textures, patterns and more. — Footwear News, 2 July 2026

These holistic mental and physical wellness itineraries incorporate spa treatments and mindfulness modalities such as forest bathing and meditation, private pilates and yoga classes, and food made with organic, sustainable ingredients. — Andrew Sessa, Robb Report, 2 July 2026