Synonyms of null

1 Syllable
vain, bad, void
2 Syllables
zipper, absent, unreal, worthless, barren, nothing
3 Syllables
low-ranking, ill-founded, invalid, forceless, useless, ungrounded, slack-spined, reasonless, powerless
4 Syllables
negative, unimportant, unavailing, nonexistent, unsanctioned, unratified, characterless, defeasible
5 Syllables
invertebrate, unenforceable, ineffective, imaginary, anticlimactic, inefficacious
6 Syllables
inoperative