Here's what rhymes with pervasiveness.

Consider these alternatives

intractability / stability omnipresence / presence centrality / personality artificiality / personality imprecision / given politicization / information implausibility / stability superficiality / personality unreliability / stability banalities / personalities emotionalism / given despairs / self corporatization / education desirability / stability repetitiveness / competitiveness transmissibility / ability popularization / education illegality / personality criminality / personality