tenableness|ˈtɛnəb(ə)lnɪs| [f. tenable + -ness.] The quality of being tenable. 1647Sprigge Anglia Rediv. iv. vii. (1854) 266 Distrusting their own strength, or the garrison's tenableness.1849J. H. Newman Disc. Mixed Congregat.Ded., A doubt..of the tenableness of the theological theory.