malcontent
Word family adjectivemalcontentedmalcontentadverbmalcontentedlynounmalcontentedness
mal·con·tent /ˈmælkəntent $ ˌmælkənˈtent/ noun [countableC] formalPROBLEM someone who is likely to cause trouble because they are not happy with the way things are organized – used to show disapproval 不满者,反叛者〔含贬义〕