Here are some synonyms for "clandestinely":
* Secretly
* Covertly
* Stealthily
* Under the radar
* In secret
* Behind closed doors
Example:
"The rebels met clandestinely in the forest to plan their attack."
Here are some synonyms for "clandestinely":
* Secretly
* Covertly
* Stealthily
* Under the radar
* In secret
* Behind closed doors
Example:
"The rebels met clandestinely in the forest to plan their attack."