Entry 2 senses Webster, 1913 Whopper /wäp'-ẽr/ · Whop·per · IPA /ˈwɑ.pɚ/ 01 n. One who, or that which, whops. 1. One who, or that which, whops. 2. something very large, especially a big lie. Same as Whapper, but the more common spelling. See: Whapper