to be precise
Definitions
Used to clarify or add a specific detail to a previous statement.
Used to indicate that one is stating something with exact accuracy.
Examples
The meeting starts at 9:00 AM, or to be precise, at 9:05 AM.
I have lived in this city for ten years, or to be precise, for exactly one hundred and twenty months.
Synonyms
to be exact strictly speaking in other words specifically to put it accurately
Antonyms
roughly speaking in general terms vaguely approximately broadly speaking