Con/kɒn/ Definition 1 of 5Pro Tip 1/2Real World Reference Remember that 'con' often refers to real or fictional scams in movies, books, and news stories. The movie's plot revolves around an elaborate con. Pro Tip 2/2Negative Connotation 'Con' suggests dishonesty and should be used with caution to avoid offending someone. Calling their business a 'con' could be seen as very harsh.