(n.) The quality or state of being insipid; vapidity.

Attic simplicity accustomedness averageness banality banalness baseness chasteness classical purity cliche coarseness common occurrence commonality commonplaceness confirmedness conventionality corniness currency customariness dullness extensiveness familiarness fixedness flatness fourth-rateness frequence frequency fustiness garden variety generality habitualness hackneyedness homeliness humbleness ignobility incidence inferiority inferiorness insipidness inveteracy inveterateness lowliness lowness matter-of-factness meanness mustiness normality oftenness ordinariness plainness platitudinousness plebeianism poorness prevalence prosaicism prosaicness prosaism prosiness purity rampantness reign relative incidence rifeness routineness run second-rateness settledness simpleness simplicity squareness staleness standardness sweepingness third-rateness triteness unembellishedness unexceptionality unidealism unimaginativeness unnoteworthiness unoriginality unpoeticalness unremarkableness unromanticism usualness vapidity widespreadness wontedness