You searched for: “fortississimo”
forté (FOR tay) (adjective), fortissimo, fortississimo
1. In a loud, forceful manner: This forté is used primarily as a musical instruction to play a certain part with greater intensity, loudness, or volume.
"The musical passage was marked to be performed loudly or in forté.2. Etymology: from Italian, literally "strong, loud"; from Latin fortis, "strong".