Answer: resistant

AnswerCrossword Clue
RESISTANTProviding opposition
RESISTANTWord after heat, fire, or water
RESISTANTStanding firm against.
RESISTANTOpposed to.
RESISTANTOpposing
RESISTANTDefiant "sista" in Broadway hit (9)
RESISTANTStubborn, nasty stain in part that's left (9)
resistantOffering resistance to something or someone
resistantmaking resistance / a person who or thing which resists; spec. a member of a resistance movement also RESISTENT