There is also the noun form "otiosity," which predates. From Wordnik.com. [Merriam-Webster's Word of the Day] Reference
A belch. “… it is thus an orifice, and gives ceaseless issue to eructations …” otiosity. From Wordnik.com. [Continuing to Improve My Vocabulary « So Many Books] Reference
Lazy; indolent; of no use; ineffective; futile. “… the Dream awakes; seeing its own otiosity, which has nothing to do with nothingness …”. From Wordnik.com. [Continuing to Improve My Vocabulary « So Many Books] Reference
Joseph Sedley then led a life of dignified otiosity such as became a person of his eminence. From Wordnik.com. [Vanity Fair] Reference
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