The Oxford Thesaurus An A-Z Dictionary of Synonyms - resistant adj.

1) opposed, against, defiant, averse, unsubmissive; impervious, unaffected: The organisms are resistant to any change. 2) recalcitrant, stubborn, obstinate, intransigent, rebellious, immovable, intractable, refractory, wilful, ungovernable, unmanageable, unruly, uncompliant, uncooperative: We have run up against a highly resistant group of activists. 3) Often, resistant to. impervious (to) , impenetrable (to) , repellent (to) ; proof (against) ; shedding: You need a more resistant material. This fabric is resistant to rain and snow.