gratuitously Copy link Outline 1. grătuĭto2. grātīs (gratiis, Pl.) • gratuitously: 1. grătuĭto: to defend a case g., causam g. defendere, Cic. Off. 2, 19, 66: he was g. base and cruel, g. malus atque crudelis erat, Sall. Cat. 16. 2. grātīs (gratiis, Pl.): to do one's duty to the state g., g. reipublicae servire, Cic. Clu. 26, 71: Mart.