vertibility means inconstancy, changeability Lexicurio rates it Sui generis — a strength score of 87 out of 100.
noun
- inconstancy, changeability“But ye are ſo full of vertibilite,
And of frenetyke folabilite,
And of melancoly mutabilite,
That ye would coarte and enforce me
Nothing to write, but hay the gy of thre,
And I to ſuffre you lewdly to ly
Of me with your language full of vilany!”