affirm Copy link Outline I. To assert positively or solemnlyII. To confirm, establish, q. v. • affirm: I. To assert positively or solemnly: affirmo, 1: I must speak, but in such a way as to a. nothing, to inquire into everything, dicendum est mihi, sed ita nihil ut affirmem, quaeram omnia, Cic.: Cicero a.s that the condition of the state is maintained by the laws of Sulla, Cicero af. legibus Sullae cohaerere statum civitatis, Quint.: v. to assert. II. To confirm, establish, q. v.