oversight

UK: /ˈəʊvə^rsaɪt/ US: /ˈoʊvɚˌsaɪt/ ,(ō′vər sīt′)

WordReference Random House Learner's Dictionary of American English © 2025

o•ver•sight /ˈoʊvɚˌsaɪt/   n. 

1. failure to notice or consider something:
   [uncountable] guilty of oversight.
2. a careless mistake or error:
   [countable] Her mistake was a minor oversight.
3. the act of watching over work, proceedings, etc.;
   supervision:
   [uncountable] the joint House and Senate committee on oversight.

WordReference Random House Unabridged Dictionary of American English © 2025

o•ver•sight  (ō′vər sīt′), n. 

1. an omission or error due to carelessness:
   My bank statement is full of oversights.
2. unintentional failure to notice or consider;
   lack of proper attention:
   Owing to my oversight, the letter was sent unsigned.
3. supervision;
   watchful care:
   a person responsible for the oversight of the organization.

• 1300–50; Middle English; see over-, sight

Synonyms

• 1, 2. mistake, blunder, slip.
• 2. lapse, neglect, inattention.
• 3. management, direction, control; surveillance.

Collins Concise English Dictionary © HarperCollins Publishers::

oversight / ˈəʊvəˌsaɪt/ noun

1. an omission or mistake, esp one made through failure to notice something
2. supervision