Re·sis·tance (rĭ-zĭs'təns)
The act or an instance of resisting or the capacity to resist. A force that tends to oppose or retard motion. often Resistance An underground organization engaged in a struggle for national liberation in a country under military or totalitarian occupation. Psychology. A process in which the ego opposes the conscious recall of anxiety-producing experiences. Biology. The capacity of an organism to defend itself against a disease. The capacity of an organism or a tissue to withstand the effects of a harmful environmental agent. Electricity. The opposition of a body or substance to current passing through it, resulting in a change of electrical energy into heat or another form of energy. resistant re·sis'tant adj.

Fu·tile (fyût'l, fyû'tîl')
adj. Having no useful result. Trifling and frivolous; idle: the futile years after her artistic peak. [Latin fûtilis.] futilely fu'tile·ly adv. futileness fu'tile·ness n. SYNONYMS futile, barren, bootless, fruitless, unavailing, useless, vain. These adjectives mean producing no result or effect: a futile effort; a barren search; bootless entreaties; fruitless labors; an unavailing attempt; a useless discussion; vain regrets. ANTONYM useful