A beta male is a term derived from the designation for beta animals in ethology. The term has been frequently used in the manosphere, along with its counterpart, "alpha male", designating males that are not beta.
A beta male is an unremarkable, careful male who avoids risk and confrontation. Beta males lack the physical presence, charisma and confidence of the alpha male. Beta males are sometimes referred to as soy boys who completely lack all necessary masculine qualities. This is usually achieved by an over-indulgence of emasculating products and/or ideologies. The origin of the term derives from the negative effects soy consumption has been proven to have on the male physique and libido.