INFRANGIBLE

[in.fran.gi.ble] adj [MF, fr. LL infrangibilis, fr. L in- + frangere to break--more at break] (1597) 1: not capable of being broken or separated into parts

2: not to be infringed or violated -- in.fran.gi.bil.i.ty n -- in.fran.gi.bly adv