REFRACTORY

I. adjective Etymology: alteration of refractary, from Latin refractarius, irregular from refragari to oppose, from re- + -fragari (as in suffragari to support with one's vote) Date: 1606 resisting control or authority ; stubborn , unmanageable, 2. resistant to treatment or cure , unresponsive to stimulus, immune , insusceptible , difficult to fuse, corrode, or draw out, see: unruly refractorily adverb refractoriness noun II. noun (plural -ries) Date: 1627 a ~ person or thing