Meaning of the word heretofore in English

What does heretofore mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

heretofore

US /ˌhɪr.tuːˈfɔːr/
UK /ˌhɪə.tuːˈfɔːr/

Adverb

before this time; until now

Example:
The information heretofore considered confidential will now be released.
His work heretofore has been exemplary.