Confidentially
/ˌkɒnfɪˈdɛnʃəli/
Synonyms
- discreetly
- intimately
- privately
- secretly
- in confidence
Slang Meanings
Off the record
I'm telling you this off the record, so don’t share it.
Hush-hush
The meeting was very hush-hush; no one was allowed to talk about it.