The phrase "big turnoff" means something that causes someone to lose interest or become unattracted to a person or thing.
Sentences with «big turnoff»
Pool: Not only are pools expensive to maintain, they also present safety concerns and potentially higher home insurance rates - big turnoffs for buyers who don't want to assume the trouble. (ratesupermarket.ca)
The third biggest turnoff was not voting at all. (laweekly.com)
«Resumes that are focused in «I» space are a really big turnoff to managers,» Baiynd told StreetID.» (careerdigital.com)