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Definition of null:

  1. Of no legal or binding force or validity; of no efficacy; invalid; void; nugatory; useless.
  2. One of the beads in nulled work.
  3. Something that has no force or meaning.
  4. That which has no value; a cipher; zero.
  5. To annul.


secret code, postcode, cryptograph, zero point, cypher, unimportant, ineffectual, worthless, profitless, cipher, zero, vigour, futile, zip fastener, abortive, nobody, vapid, bootless, slide fastener, zippo, inconstant, visionary, nil, unavailing, delusive, nix, goose egg, useless, vain, nugatory, trivial, shadowy, zilch, void, baseless, naught, aught, nothing, unsatisfying, unprofitable, absence, deceitful, unserviceable, nought, postal code, energy, fruitless, zip, nada, invalid, vigor, idle, zipper, trifling.

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