נִדְב֣וֹת פִּ֭י רְצֵה־נָ֣א יְהוָ֑ה וּֽמִשְׁפָּטֶ֥יךָ לַמְּדֵֽנִי׃
Accetta, ti supplico, le offerte di libero arbitrio della mia bocca, o Eterno, e insegnami le tue ordinanze.
Rashi on Psalms
The freewill offering of my mouth Words of appeasement that my mouth offers You. Every נדבה, is an expression of appeasement.