Synonyms of vainness

2 Syllables
conceit
3 Syllables
idleness, stuffiness, self-conceit, snottiness, hollowness, pointlessness, worthlessness, bootlessness, narcissism, emptiness, egotism, fruitlessness, vanity
4 Syllables
complacence, uselessness, frivolousness, meaninglessness, senselessness
5 Syllables
outrecuidance, unavailingness
6 Syllables
ineffectuality, unprofitableness, ineffectiveness