Comparative form of bad: more bad; worse.(adjective)
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Use "badder" in a sentence
"Here in Charlotte we have only one indie theatre and its located in one of the "badder" parts of Charlotte, and is a pain in the ass to get to."
"But recession has a bigger and "badder" meaning then that."
"On the other hand, you have high capacity weapons in the hands of people wearing badges - some of whom exercise very bad judgement, and think the badge makes them braver, tougher, "badder" than anyone else."