1. (adj)nothing, nil, nix, nada, null, aught, cipher, cypher, goose egg, naught, zero, zilch, zip, zippo a quantity of no importance Synonyms: postal code, nought, zipper, zero, vigour, zip, energy, goose egg, postcode, naught, aught, cipher, nix, zippo, nil, zero point, nobody, secret code, slide fastener, nonentity, vigor, zip fastener, cryptograph, cypher, zilch, nothing, nada, null Antonyms: valid
2. (adj)null, void lacking any legal or binding force Synonyms: void, null Antonyms: valid
Synonyms, Thesaurus & Antonyms of 'null'
English Synonyms and Antonyms
1. null Vain (L. vanus, empty) keeps the etymological idea through all changes of meaning; a vain endeavor is empty of result, or of adequate power to produce a result, a vain pretension is empty Synonyms: vain, abortive, futile, shadowy, unsatisfying, baseless, idle, trifling, unserviceable, bootless, inconstant, trivial, unsubstantial, deceitful, ineffectual, unavailing, useless, delusive, nugatory, unimportant, vapid, empty, null, unprofitable, visionary, fruitless, profitless, unreal, worthless Antonyms: adequate, effective, powerful, solid, useful, advantageous, efficient, profitable, sound, valid, beneficial, expedient, real, substantial, valuable, competent, potent, serviceable, sufficient, worthy
Synonyms for null 
