Clumsy or ill-bred fellow

A. Boor

B. Oaf

C. Lout

D. Yokel

Answer: Option A

Solution(By Examveda Team)

One word substitute is Boor.

Boor: a rough and bad-mannered person.
Oaf: a man who is rough or clumsy and unintelligent.
Lout: an uncouth and aggressive man or boy.
Yokel: an uneducated and unsophisticated person from the countryside.