antiflow noun 2adjective 1 noun2 •A mental state of boredom and lack of challenge, associated with performing activities one does not want to do.A second source of antiflow for the blue-collar workers was the type of interaction they had with supervisors. — 1992 •Flow in an opposite direction.Antiflow of pions can be explained by the shadowing effect. — 2001 adjective1 •That prevents the unwanted flow of a fluid