lapsus linguae Slip of the tongue; from Latin lapsus, a slip; an error; chiefly used in Latin phrases. English pronunciation: LAP suhs LING gwee. Larry, this is Fattie; I mean, Hattie! This shows that a lapsus linguae can be embarrassing, to say the least. The situation could also be considered a lapsus memoriae or a 'lapse of memory'. —Word In... Found on http://www.wordinfo.info/words/index/info/view_unit/3473/