in·fran·gi·ble \(ˈ)in|franjəbəl, ənˈf-, -raan-\adjective Etymology: Middle French, from Late Latin infrangibilis, from Latin in- in- (I) + frangere to break + -ibilis -ible — more at break 1.: not capable of being broken < infrangible resolution of character > or separated into parts < infrangible series > 2.: not to be infringed or violated < infrangible law > • in·fran·gi·ble·nessnoun • in·fran·gi·bly\-blē, -bli\adverb