THESAURUS
Zero
absolute zero, aught, blank, boiling point, cipher, concentrate on, dew point, duck, dud, dummy, fix on, focus on, freezing point, goose egg, hollow man, home in on, insignificancy, jackstraw, lay figure, man of straw, melting point, nada, nadir, naught, nebbish, nichts, nihil, nil, nix, no such thing, nobody, nonentity, nothing, nothing at all, nothing on earth, nothing whatever, nought, null, nullity, pinpoint, puppet, pushover, recalescence point, rock bottom, temperature, thing of naught, trifle, void, whiffet, whippersnapper, zero in on, zilch
ROGET THESAURUS
Zero
Unsubstantiality
N
unsubstantiality, insubstantiality, nothingness, nihility, no degree, no part, no quantity, no thing, nothing, naught, nil, nullity, zero, cipher, no one, nobody, never a one, ne'er a one, no such thing, none in the world, nothing whatever, nothing at all, nothing on earth, not a particle, all talk, moonshine, stuff and nonsense, matter of no importance, matter of no consequence, thing of naught, man of straw, John Doe and Richard Roe, faggot voter, nominis umbra, nonentity, flash in the pan, vox et praeterea nihil, shadow, phantom, dream, ignis fatuus, such stuff as dreams are made of, air, thin air, vapor, bubble, baseless fabric of a vision, mockery, hollowness, blank, void, inanity, fool's paradise, unsubstantial, baseless, groundless, ungrounded, without foundation, having no foundation, visionary, immaterial, spectral, dreamy, shadowy, ethereal, airy, cloud built, cloud formed, gossamery, illusory, insubstantial, unreal, vacant, vacuous, empty, eviscerated, blank, hollow, nominal, null, inane, there's nothing in it, an ocean of dreams without a sound.
Zero
N
zero, nothing, null, nul, naught, nought, void, cipher, goose egg, none, nobody, no one, nichts, nixie, nix, zilch, zip, zippo, not a soul, ame qui vive, absence, unsubstantiality, not one, not a one, not any, nary a one, not a, never a, not a whit of, not an iota of, not a drop of, not a speck of, not a jot, not a trace of, not a hint of, not a smidgen of, not a suspicion of, not a shadow of, neither hide nor hair of.