palooka

Etymology
in the US since the 1920s, originally primarily of boxers. Popularized by Jack Conway of Variety, who also popularized  and. Further popularized by in his comic strip  about a boxer (published in newspapers since 1930, particularly popular in 1940s).

Noun

 * 1)  A stupid, oafish or clumsy person.
 * 2)  Someone incompetent or untalented.

Translations

 * Dutch: ,
 * Finnish: