Need another word that means the same as “unsustainable”? Find 28 synonyms for “unsustainable” in this overview.
The synonyms of “Unsustainable” are: indefensible, undefendable, unarguable, insupportable, refutable, unjustified, unwarranted, unjustifiable, inadmissible, unsound, flimsy, weak, shaky, flawed, defective, faulty, implausible, specious, groundless, unfounded, baseless, invalid, absurd, illogical, irrational, preposterous, senseless, unacceptable
According to the Oxford Dictionary of English, “unsustainable” as an adjective can have the following definitions:
| absurd | Wildly unreasonable, illogical, or inappropriate. The absurd excuse that the dog ate his homework. |
| baseless | Without foundation in fact. Baseless allegations. |
| defective | Not working properly. Dystrophin is commonly defective in muscle tissue. |
| faulty | Having a defect. A faulty brake. |
| flawed | (of a person) having a weakness in character. A fatally flawed strategy. |
| flimsy | Not convincing. The flimsy garment fell from her. |
| groundless | Without a basis in reason or fact. The allegations proved groundless. |
| illogical | Lacking orderly continuity. An illogical fear of the supernatural. |
| implausible | (of an argument or statement) not seeming reasonable or probable; failing to convince. Gave the teacher an implausible excuse. |
| inadmissible | (especially of evidence in court) not accepted as valid. He held that such evidence was inadmissible. |
| indefensible | Not able to be protected against attack. This behaviour is morally indefensible. |
| insupportable | Unable to be supported or justified. He had arrived at a wholly insupportable conclusion. |
| invalid | Having no cogency or legal force. Invalid reasoning. |
| irrational | Of a number quantity or expression not expressible as a ratio of two integers and having an infinite and non recurring expansion when expressed as a decimal Examples of irrational numbers are the number and the square root of 2. Irrational numbers. |
| preposterous | So unreasonable as to invite derision. A preposterous suggestion. |
| refutable | Able to be refuted. |
| senseless | Lacking sense or understanding or judgment. A senseless act. |
| shaky | Not safe or reliable; liable to fail or falter. After a shaky start the Scottish team made superb efforts. |
| specious | Based on pretense; deceptively pleasing. A specious claim. |
| unacceptable | Not satisfactory or allowable. An unacceptable violation of personal freedom. |
| unarguable | Against which no argument can be made. Unarguable proof of conspiracy. |
| undefendable | Not defended or capable of being defended. His views are undefendable. |
| unfounded | Without a basis in reason or fact. Her fear that she had cancer was unfounded. |
| unjustifiable | Incapable of being justified or explained. An unjustifiable restriction on their freedom. |
| unjustified | Not shown to be right or reasonable. Unjustified price increases. |
| unsound | Physically unsound or diseased. Dorinda was mentally unsound. |
| unwarranted | Not justified or authorized. Unwarranted limitations of personal freedom. |
| weak | Relating to or denoting the weakest of the known kinds of force between particles which acts only at distances less than about 10 cm is very much weaker than the electromagnetic and the strong interactions and conserves neither strangeness parity nor isospin. Their problems arose from fielding weak teams in league matches. |
The synonyms and related words of "Brag" are: blow, bluster, boast, gas, gasconade, shoot a…
The synonyms and related words of "Pierce" are: thrust, make a hole in, penetrate, puncture,…
The synonyms and related words of "Weary" are: aweary, tired, tired out, exhausted, fatigued, overtired,…
The synonyms and related words of "Kick" are: complain, kvetch, plain, quetch, sound off, give…
The synonyms and related words of "Useless" are: futile, pointless, purposeless, impractical, vain, in vain,…
Want to describe something with adjectives that start with 'J'? Though they are not numerous,…