Functus officio Term Functus officio Meaning A legal term meaning that an officer or agency has accomplished the purpose of their appointment and therefore has no further authority or jurisdiction. Context Legal maxim More from Legal Maxims Ex post facto Factum probans Fatum Fraus est celare fraudem Furiosi absentis loco est Furiosi nulla voluntas est Furiosis nulla voluntas est Furiosus furore suo punitur More from Legal Maxims