ex-gay adjective 1noun 1forms 1 adjective1 •Of or pertaining to the movement that considers homosexuality a disease and claims it can be cured by conversion therapy.Ex-gay ministries began as redoubts for men and women trying to reconcile their faith and sexuality. — 2003 noun[in the plural]1 •A person who considers themselves or is considered by others to be no longer homosexual, usually due to conversion therapy. formsex-gays