‖ non avenu|nɔnavny| Also erron.-ue. [Fr.] Not having happened. 1840Thackeray Paris Sk.-bk. I. 123 Otherwise the deed became null and non-avenue.1887Baron H. de Worms Mem.Ct. von Beust I. Introd. p. lvii, The incident was considered, in diplomatic language, as non avenu.