A lack of distinctive, appealing, or energetic character; tastelessness; extreme blandness.(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "insipidness" in a sentence
"Never seen the first VG before, far better than contempt stuff of stars and mono color insipidness, Thats nice, love to see new work, even if by old faces."
"Also, the insipidness of the priest, denoted at least in part by his remaining nameless, was especially interesting when coupled with his equally manipulative nature."
"From the first sip, the drink with cheater ice was like a debased “cocktail lite,” with thin flavors and watery insipidness."