Synonyms of irrelevance

2 Syllables
cheapness
3 Syllables
shabbiness, paltriness, trivialness
4 Syllables
frivolousness, incongruity, remoteness, triviality, trivialities
5 Syllables
inconsistency, impertinence, unrelatedness
6 Syllables
inappositeness, inappropriateness, insignificance, immateriality, negligibility
7 Syllables
inapplicability