Synonyms for Render null and void:

• v.

  •annul (verb)
  • declare,
  • invalidate,
  • vitiate,
  • expunge,
  • annihilate,
  • erase,
  • blot out,
  • delete,
  • abolish,
  • repeal,
  • nix,
  • reverse,
  • countermand,
  • call off,
  • kill,
  • obliterate,
  • dissolve,
  • scrub,
  • undo,
  • wipe out,
  • revoke,
  • recall,
  • rescind,
  • negate,
  • efface,
  • neutralize,
  • abrogate,
  • vacate,
  • discharge,
  • abate,
  • get off the hook,
  • quash,
  • retract.
  •cancel (verb)
  • abort,
  • offset,
  • ignore,
  • counterbalance,
  • counterpoise,
  • rule out,
  • counteract,
  • overthrow,
  • recant,
  • redeem,
  • redress,
  • void,
  • annul,
  • discard,
  • refute.
  •frustrate (verb)
  • stymie,
  • preclude,
  • arrest,
  • foul up,
  • stump,
  • hinder,
  • lick,
  • beat,
  • ruin,
  • obstruct,
  • crimp,
  • hold up,
  • dishearten,
  • balk,
  • prevent,
  • foil,
  • discourage,
  • counter,
  • depress,
  • conquer,
  • forestall,
  • outwit,
  • circumvent,
  • confront,
  • check,
  • impede,
  • halt,
  • dash,
  • forbid,
  • obviate,
  • cramp,
  • baffle,
  • inhibit,
  • upset the applecart,
  • overcome,
  • bar,
  • defeat,
  • block.
  •nullify (verb)
  • veto,
  • countervail,
  • compensate,
  • restrict,
  • trash,
  • renege,
  • ax,
  • limit,
  • squash,
  • confine,
  • stamp out,
  • zap,
  • scratch,
  • take out.

• Other synonyms:

  •annul
  • blotted out,
  • Reversing,
  • Quashed,
  • blotting out,
  • nixing.
  •Other relevant words:
  • andul.

Antonyms for Render null and void:

• v.

  • annul
    DO, create, schedule, legalize, save, permit, revive, approve, enforce, help, enact, set up, continue, pass, retain, keep, restore, support, sanction, institute, establish, validate, ratify, uphold, allow, revalidate.
  • cancel
    tip, aid, arrange, encourage, imbalance, emphasize, assist.
  • frustrate
    abet, let go, inspirit, forward, give up, surrender, facilitate, lose, open, push, release, yield, cooperate, hearten, retreat.
  • nullify
    free, sanctify, affirm.