sufficiency (n.)
competence, ability, capability
MA V.i.29 [Leonato to Antonio, of grief] 'tis ... no man's virtue nor sufficiency / To be so moral when he shall endure / The like himself
MM I.i.8 [Duke to Escalus] to your sufficiency, as your worth is able
Oth I.iii.222 [Duke to Othello, of the person in charge in Cyprus] we have there a substitute of most allowed sufficiency
WT II.i.185 [Leontes to Antigonus] I have dispatched in post / To sacred Delphos ... / Cleomenes and Dion, whom you know / Of stuffed sufficiency