noun
oaf
OHF/əʊf/
A clumsy or foolish person.
I feel like an oaf whenever I knock something over.

Etymology
A Scandinavian source such as Norwegian alfr, 'silly person,' connects the word with the older sense 'elf.' English oaf first meant a fairy changeling, then became an insult for a foolish person.
In context
of all the female oafs she had ever seen, Augusta Fawn was the greatest oaf.
More examples
- That clumsy oaf just stepped on my foot.
- Don't be an oaf—read the instructions before you start.
- The comedy follows two lovable oafs who get everything wrong.
Forms
oaf · oafs
oafish adjective — Clumsy or foolish in behavior.