covertly
1 of 1adverb/ˈkoʊvɚtli/
1
with the intention of keeping actions, plans, or operations secret
- The intelligence agency operated covertly to gather information on the enemy.
- The undercover agent observed the criminal activities covertly.
- The spy infiltrated the organization covertly to gather crucial information.
- The hacker gained access to the system covertly, leaving no trace.
Antonyms: