imbecile , fool

imbecile

ˈɪmbɪsiːl/

noun

informal

1. 1.

   a stupid person.

   synonyms:

   fool, idiot, cretin, moron, dolt, halfwit, ass, dunce, dullard, simpleton, nincompoop,blockhead, ignoramus, clod; More

adjective

1. 1.

   stupid; idiotic.

   "try not to make imbecile remarks"

   synonyms:

   stupid, foolish, idiotic, silly, doltish, half-witted, witless, dull, brainless, mindless,unintelligent, unwise;

Lothario

Lothario
ləˈθɛːrɪəʊ,ləˈθɑːrɪəʊ/

noun

a man who behaves selfishly and irresponsibly in his sexual relationships with women.
"they are seduced by a handsome Lothario who gains control of their financial affairs"