nitwit
Concise Oxford English Dictionary © 2008 Oxford University Press:
nitwit/ˈnɪtwɪt/
▶noun informal a silly or foolish person.
– derivatives
nitwitted adjective,
nitwittedness noun,
nitwittery noun.
nitwitted adjective,
nitwittedness noun,
nitwittery noun.
'nitwit' also found in these Oxford entries:

