Everything about him, especially his talkative nature, proclaims his effeminacy.

Effeminacy : Effeminacy is the manifestation of traits in a boy or man that are more often associated with feminine nature, behavior, mannerism, style, or gender roles rather than with masculine nature, behavior, mannerisms, style or roles.
Boorishness : rough and bad-mannered; coarse.
Manliness : the traditional male quality of being brave and strong.
Aggressiveness : hostile or violent behaviour.
Attractiveness : the quality of being pleasing or appealing to the senses.

Antonym of Effeminacy is Manliness