antihomosexual adjective 1noun 1forms 3 adjective1 •Opposed to homosexuality.Even at the height of antihomosexual hysteria during the most overwrought day of the Cold War, a number of paperbacks appeared that dealt with male homosexuality. — 2001 noun1 •A person who opposes homosexuality. formsantihomosexuals · more antihomosexual · most antihomosexual