(n.) The quality or state of being tense, or strained to stiffness; tension; tenseness.

antagonism antipathy averseness aversion backlash backwardness challenge clashing collision combative reaction complaint conflict confutation contradiction contraposition contrariety counteraction counterposition counterworking crankiness crotchetiness cursoriness defiance demur disagreement disinclination disobedience dispute disrelish dissent dissentience distaste firmness foot-dragging fractiousness friction grudging consent grudgingness indisposedness indisposition indocility interference intractableness kick lack of enthusiasm lack of zeal mutinousness negativism nolition nonconformity noncooperation objection obstinacy opposition opposure oppugnance oppugnancy passive resistance perfunctoriness perverseness protest reaction rebuff recalcitrance recalcitrancy recalcitration recoil refractoriness refusal reluctance remonstrance renitence repellence repellency repercussion repugnance repulse repulsion resistance revolt rigidity rigidness rigor slowness stand starchiness stiffness stubbornness sulk sulkiness sulks sullenness swimming upstream tautness tenseness tension tensity tightness uncooperativeness unenthusiasm unwillingness withstanding