Synonyms for Unsustainable:

• adj.

  •Other relevant words: (adjective)
  • fleeting,
  • unviable,
  • brief,
  • implausible,
  • temporary,
  • unendurable,
  • unsuitable.

• n.

  •Other relevant words: (noun)
  • hope,
  • out,
  • unattainable,
  • ghost,
  • cat,
  • silk,
  • way,
  • impossible,
  • running,
  • inoperable,
  • Controvertible,
  • impracticable,
  • league,
  • infeasible,
  • love,
  • go,
  • unfeasible,
  • unworkable,
  • untenable,
  • nohow,
  • impossibly,
  • hiding,
  • goodbye,
  • will-o'-the-wisp,
  • elusive.

• Other synonyms:

  •
  • clean up,
  • biohazard,
  • biological control,
  • the carbon cycle,
  • carbon trading,
  • catalytic converter,
  • carbon sink,
  • carbon-neutral,
  • biodegradable.
  •
  • effectively,
  • undecided,
  • circumstantial,
  • be better/worse off,
  • unique,
  • paradise,
  • situated,
  • face to face,
  • effective,
  • fateful.
  •Other relevant words:
  • dissimilarity,
  • quality,
  • impermanence,
  • divergency,
  • contrariety,
  • impracticality,
  • characteristic,
  • unsuitability,
  • Unfixedness,
  • inconstancy,
  • irrationality,
  • changeableness,
  • changeability,
  • unpredictability,
  • difference,
  • dissonance,
  • uncertainty,
  • discrepancy,
  • irregularity,
  • imbalance,
  • variability,
  • invalidity,
  • disparity,
  • trait,
  • unsteadiness,
  • vulnerability,
  • dissimilitude,
  • unreason,
  • disagreement,
  • conflict,
  • unreasonableness,
  • feature,
  • irresolution,
  • discordance,
  • fluctuation,
  • shakiness,
  • weakness,
  • incongruity,
  • hesitation,
  • inconsistency,
  • unacceptability,
  • attribute,
  • volatility,
  • divergence,
  • inappropriateness.
  •Other relevant words (noun):
  • sickly,
  • false,
  • unstable,
  • defective,
  • poor,
  • fragile,
  • unjustified,
  • untrustworthy,
  • unreasonable,
  • baseless,
  • faint,
  • specious,
  • invalid,
  • groundless,
  • contestable,
  • unsound,
  • clean,
  • thin,
  • unsupportable,
  • idle,
  • unprovable,
  • Undemonstrable,
  • unverifiable,
  • light,
  • unjustifiable,
  • shaky,
  • vain,
  • unsupported,
  • ailing,
  • infirm,
  • unwarranted,
  • faulty,
  • watery,
  • flimsy,
  • without basis,
  • illogical,
  • cowardly,
  • nerveless,
  • flawed,
  • ungrounded,
  • empty,
  • weak,
  • unauthenticated,
  • ill-founded,
  • flat,
  • feeble,
  • Unsustained,
  • unmaintainable,
  • rickety,
  • indefensible,
  • inadequate,
  • unfounded.

Paraphrases for Unsustainable:

• Equivalence

  • Adjective
    non-sustainable, untenable.
  • Noun, singular or mass
    untenable.

• Forward Entailment

  • Adjective
    sustainable.

• Independent

  • Adjective
    unmanageable, unstable, unworkable, insufferable, impossible, tenable, unreasonable, viable, non-durable, feasible, unconscionable, irrational, unlikely, inadmissible, non-expendable, sustained, durable, volatile, miserable, fragile, precarious, excruciating, indistinguishable.

• Other Related

  • Adjective
    unbearable, unviable, intolerable, unacceptable, non-viable, insupportable, indefensible, unaffordable, unsupportable, excessive, lasting.

Antonyms for Unsustainable:

• adj.

  • not able to be supported in the future
    long-term, tenable, sustainable, suitable, feasible.