She predicts that the total cost will be around 500 dollars, and that's a 'conservative' guess. [=the total cost will probably be higher than that]
He had some pretty 'conservative' [='traditional, conventional'] ideas about the way life should be.
He gave me a 'conservative' estimate of how much repairs will cost.
(..) - You need one? - No. If you ever need one, I know a fellow who can get you a real nice deal. Lots of shit around. I never use mine. I'm conservative. But it's a good thing to have just as a threat. I'm gonna go do my dirt. Travis. Look. A piece of Errol Flynn's bathtub. (..)1976 Taxi Driver