oaf /ōf, oʊf 
/ ▸ noun a stupid, uncultured, or clumsy person: they are just big, clumsy oafs.
– ORIGIN early 17th century : variant of obsolete auf, from Old Norse álfr ‘elf’. The original meaning was ‘elf's child, changeling’, later ‘idiot child’ and ‘halfwit’, generalized in the current sense.
EnglishOxford New American Dictionary
