Hypomasculinity is a psychological term for the absence of male stereotypical behaviour, for example, the absence of the de-emphasising of feelings, relationships, etc. A Jungian interpretation of this would be of an overwhelmingly strong anima or female complex. This term can be pejorative and it is important not to place a moral interpretation on whether it is desirable, only by whether it is adaptive or maladaptive. Its opposite behaviour is termed hypermasculinity.
Anorexia nervosa
Hypomasculinity is commonly attained by male anorexics. The hypomasculinity includes a demasculinized physique and actual reduction or cessation of sexual functioning as a result of deliberate malnutrition.
References
Hypomasculinity Wikipedia(Text) CC BY-SA