As a Noun: 1. An activity done just for the fun of it. English = amusement, fun. As a Verb or Adjective: 1. To do something just for fun, for amusement. Often something that teases or irritates other people. Interactive: 1. Used alone to mean that you accept an invitation or suggestion to do something for no particular reason at all. English = 'Oh yes, why not?', 'Yeah, I'm in the mood!', 'That'll be a nice change!' and so on.