heteroflexible adjective 1noun 1forms 1 adjective1 •Primarily heterosexual, but open to taking part in a limited amount of homosexual activity.A “boi” describes a boyish gay guy or abiological female with a male presentation; and “heteroflexible” refers to a straight person with a queer mindset — 2003 noun1 •Someone who is heteroflexible. formsheteroflexibles