In secret Meaning, Definition & Usage
- 
       adverb in secrecy; not openly
       
       
 secretly; on the QT; on the Q.T..
 - met secretly to discuss the invasion plans
- the children secretly went to the movies when they were supposed to be at the library
- they arranged to meet in secret
 
WordNet
Definitions
- in a private place; in privacy or secrecy; in a state or place not seen; privately.