Synonyms for Null and void:

• adj.

  •ineffective/ineffectual (adjective)
  • fruitless,
  • indecisive,
  • bootless,
  • nugatory,
  • paltry,
  • lame,
  • abortive,
  • futile,
  • spineless,
  • powerless,
  • incompetent,
  • vain,
  • idle,
  • inoperative,
  • neutralized,
  • unprofitable,
  • limited,
  • withered,
  • inferior,
  • unable,
  • inadequate,
  • feeble,
  • unfruitful,
  • impotent,
  • feckless,
  • barren,
  • unproductive,
  • innocuous,
  • unavailing,
  • worthless,
  • unsuccessful,
  • inept.
  •inefficacious (adjective)
  • in-efficacious,
  • in efficacious.
  •invalid (adjective)
  • fallacious,
  • irrational,
  • sophistic,
  • wrong,
  • unscientific,
  • bad,
  • illogical,
  • baseless,
  • unreasonable,
  • Unreasoned,
  • untrue,
  • false,
  • unsound,
  • mad.
  •nonexistent (adjective)
  • dreamlike,
  • dead,
  • passed away,
  • imaginary,
  • Perished,
  • defunct,
  • mythical,
  • Non-existent,
  • vague,
  • imagined,
  • without foundation,
  • flimsy,
  • passed on,
  • immaterial,
  • extinguished,
  • departed,
  • legendary,
  • shadowy,
  • fancied,
  • unsubstantial,
  • lost,
  • unreal,
  • vacant,
  • insubstantial,
  • dreamy,
  • ungrounded,
  • missing,
  • blank,
  • absent,
  • few and far between,
  • tenuous,
  • groundless,
  • chimerical,
  • airy,
  • vaporous,
  • imponderable,
  • negative,
  • ethereal,
  • Gossamery,
  • extinct,
  • illusory,
  • hallucinatory,
  • empty,
  • hypothetical,
  • gone.
  •null (adjective)
  • nothing.
  •Other relevant words: (adjective)
  • unconfirmed,
  • not working,
  • invertebrate,
  • unsanctioned,
  • null and void,
  • unratified,
  • defeasible,
  • ill-founded,
  • ineffective,
  • not viable,
  • inefficacious,
  • Voided,
  • null,
  • nonexistent,
  • void,
  • anticlimactic,
  • forceless,
  • reasonless,
  • unenforceable,
  • inefficient,
  • not binding,
  • characterless.
  •void (adjective)
  • sterile,
  • Avoided,
  • set aside,
  • negated.

• n.

  •Other relevant words: (noun)
  • invalid.

• Other synonyms:

  •Other relevant words (noun):
  • unrelieved,
  • pointless,
  • bland,
  • no longer law,
  • vacuous,
  • insipid,
  • bare,
  • nullified,
  • jejune,
  • of no effect,
  • hollow,
  • useless,
  • inane,
  • white,
  • clear,
  • cancelled out,
  • defective,
  • unconvincing,
  • Annulled,
  • Revoked,
  • Repealed,
  • devoid,
  • bleached,
  • featureless,
  • ineffectual,
  • voiceless,
  • erroneous.

Antonyms for Null and void:

• adj.

  • Other antonyms:
    binding, good, working, legal.