Synonyms for Emasculation:

n.

castration (noun)
spaying, castration, gelding, cutting.
emasculation (noun)
unmanliness, debilitation, sterilization, enervation.
weakness (noun)
weakness, debilitation, unmanliness, enervation.

Other synonyms:

Other relevant words:
unmanliness, sterilization, enervation, castration, debilitation.