unwaveringness

From unwavering +‎ -ness.

unwaveringness (uncountable)

1. The quality of being unwavering.
   • 2019, Michael Hofmann, “Unwavering: A foray into the oft-unnoticed side of Brecht's work”, in The Times Literary Supplement, retrieved 18 March 2022:

     There is a kind of unwaveringness in Brecht that is simply matchless.