As a Noun: 1. The facial expression that shows that you are happy, pleased, amused or being friendly. It primarily involves turning up the corners of your mouth and sometimes by showing your teeth. English = smile. 2. The pleasure some people feel in other people's misfortunes. (Usually made with an insincere facial expression). Formal English = Schadenfreude. As a Verb or Adjective: 1. To show that you are happy, pleased, amused or being friendly by turning up the corners of your mouth and sometimes by showing your teeth. English = smile. 2. To smile or take pleasure in other people's misfortune. (Usually made with an insincere facial expression.)