What is the opposite of more sustainable?

Need antonyms for more sustainable? Here's a list of opposite words from our thesaurus that you can use instead.

Contexts ▼▲ Opposite of comparative for able to be maintained or defended against attack or objection Opposite of comparative for able to be endured Opposite of comparative for clearly apparent or capable of being logically proved Opposite of comparative for environmentally friendly Opposite of comparative for operating in a continuous fashion over a period of time … more ▼ ▲ Adjective ▲ Opposite of comparative for able to be maintained or defended against attack or objection faultier flimsier absurder shakier weaker more untenable more indefensible more unsustainable more insupportable more undefendable more unjustifiable more unsupportable more fallacious more illogical more invalid more irrational more unjustified more defective more groundless more implausible more preposterous more senseless more unreasonable more flawed more inadmissible more specious more unsound “Since no action can be both swift and slow, it follows that the theory is untenable.” Adjective ▲ Opposite of comparative for able to be endured more unsupportable more unendurable more insupportable more unbearable more intolerable more insufferable more unsufferable “Current levels of trade deficits are simply unsupportable in the long run.” Adjective ▲ Opposite of comparative for clearly apparent or capable of being logically proved more unprovable more unsupportable more insupportable more unsustainable “There will always be innumerably more unprovable theories in the world than provable ones.” Adjective ▲ Opposite of comparative for environmentally friendly more unsustainable “Generating power through the use of fossil fuels is both unsustainable and environmentally damaging.” Adjective ▲ Opposite of comparative for operating in a continuous fashion over a period of time more finite more limited more restricted “Counting until the largest number is reached is not a finite procedure because there is no largest number.” Find more words! 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Use our Antonym Finder Nearby Words more sustained more swaggering more swaggeringly more swashbuckling more sweeping more sweet more suspiciously more suspicious more suspect more susceptible more survivable more surveyable