Informal. , a person who is excessively interested in some game, sport, etc. ; A bridge fiend. A person who is highly skilled or gifted in something.

The shameless effrontery of the fiend, at the cafรฉ, pretending to forget all he had done to her, begging to take up with her again, as if nothing had happened between them a dozen years ago. Definition of fiend noun in oxford advanced learner's dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. An evil or cruel person 2. Someone who is very interested in a particular thing. Learn more. If you describe someone as a fiend, you mean that they are extremely wicked or cruel.

Someone who is very interested in a particular thing. Learn more. If you describe someone as a fiend, you mean that they are extremely wicked or cruel. An evil spirit a demon or devil; A very evil or cruel person Informal terms a person who is extremely addicted to some pernicious habit: An opium fiend. Informal terms a person who is excessively interested in some game, sport, etc. ;

Informal terms a person who is extremely addicted to some pernicious habit: An opium fiend. Informal terms a person who is excessively interested in some game, sport, etc. ;