ˌinside-ˈoutness [f.inside out (inside A. n. 4) + -ness.] The state of being inside out. 1919R. Bridges in S.P.E. Tract ii. 40 The insideoutness, topsy-turviness, and preposterousness of Mr. Jones' method is incredible.1960Encounter XIV. v. 70 The inside-outness Criticus.