Recalcitrant

rē-kal′si-trant, adj. showing repugnance or opposition: refractory.— v.i. or (rarely) v.t. Recal′citrate , to show repugnance.— n. Recalcitrā′tion . [L. recalcitrans , -antis — re- , back, calcitrāre, -ātum , to kick— calx , calcis , the heel.]