An 'alias' or 'nom-de-plume'.
-adjective 1. working or done out of public sight; secret: an undercover investigation. 2. engaged in spying or securing confidential information: an undercover agent.
The suffix is -er. The suffix is an action.
Another name for plateau is tableland.
It is an oesophagus
Another name for the sweetbriar is eglantine.
A spy, operative, undercover agent, sleeper, spook, mole.
SPY Ghosts Shadows (and for gamers) Splinter cell :} Fifth columnists
undercover cruiser
smith
Crockett's undercover name is "James "Sonny" Crockett." In the television series "Miami Vice," he often uses this alias while working undercover to infiltrate various criminal organizations. The character is known for his stylish persona and complex background, which are integral to the show's narrative.
Peter Franks
saving grace - stellar revival
Don't think so!
hiding in plain sight
Lola loughnaggle
Undercover
" Oughta Know By Now."