Resistant means able to withstand something without being affected. Water-resistant, resistant to change, antibiotic-resistant.
It takes to. Water-resistant is a weaker claim than waterproof and the difference is deliberate. Antibiotic-resistant bacteria are the serious modern use, and the resistance is in the bacteria rather than in the person taking the drug.
1adjectiveresistantAble to withstand something without being affected.
“This paint is resistant to heat and won't crack near the fire.”
resistant is a quality.
French resistant comes from Latin resistere, to stand against — re plus sistere, to stand.
French
résistant
English, today
resistant
From French résistant; equivalent to resist + -ant.
Etymology from Wiktionary, CC BY-SA