secretly

Adverb

• not openly; inwardly
  • they were secretly delighted at his embarrassment
    
  • hoped secretly she would change her mind
    

• in secrecy; not openly
  • 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
    

Related words

• Synonyms: 
  in secret , on the Q.T. , on the QT