/ ˈəʊvəsaɪt; NAmE ˈoʊvərs-/ noun
1.
[ C , U ] the fact of making a mistake because you forget to do sth or you do not notice sth
SYN omission :
I didn't mean to leave her name off the list; it was an oversight.
2.
[ U ] ( formal ) the state of being in charge of sb/sth :
The committee has oversight of finance and general policy.