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"
not openly; inwardly;
"they were secretly delighted at his embarrassment"
"hoped secretly she would change her mind"
- They decided to leave the town secretly.
- He put the money in coffer secretly.
- secret 秘密