the act of leaving out or excluding something

a failure to do something, especially something that one has a duty to do

ऐसी गलती जो करने में चूक हो जाए

English Usage: His omission of the report submission deadline was a serious error.

Hindi Usage: रिपोर्ट जमा करने की अंतिम तिथि को छोड़ना उसकी एक गंभीर गलती थी।