ren·i·tent 
(rĕnĭ-tənt, rĭ-nītnt)
(rĕnĭ-tənt, rĭ-nītnt)adj.
1. Resistant to physical pressure; not pliant.
2. Reluctant to yield or be swayed; recalcitrant.
[Latin renītēns, renītent-, present participle of renītī, to resist : re-, re- + nītī, to press forward.]
reni·tence, reni·ten·cy n.