Here's what rhymes with optimality.

Consider these alternatives

decidability / stability theoretic / settheoretic extremal / alcohol falsifiability / ability variational / educational undecidability / stability postulates / states axiomatic / dramatic probabilistic / characteristic structuration / operation extensibility / ability optimization / information cryptosystem / system distributional / constitutional generalisation / relation hedonic / chronic invariance / variance countable / accountable multivariate / late kinematic / dramatic criterion / delirium dynamical / mechanical axiomatization / education postulation / education