The goal of an A-level definition essay is to define a certain term revealing its true essence. Therefore it may be said that any certain word or term may become the topic for a definition essay. Nevertheless, the best definition essays are written not on simple casual words but on different concepts, ideas or notions. In terms of this fact the analyzed term is not simply analyzed as a lingual term but as a carrier of an important message for the society in general or a certain social group in particular. As the author of the essay provides his understanding of the term through the prism of his lifetime experience the best topics for definition essays deals with social relations. Correspondingly, defining such notions as success, friendship, love, family and heroism can make brilliant definition essay topics.