IPA: /ˈθɛrɪˌtɔːr/
KK: /ˈθɛrɪˌtɔr/
Up to that time or before that moment.
The law was not enforced theretofore, leading to confusion among the citizens.
Theretofore is formed from "there" (from Old English "þær", meaning at that place) and "tofore" (from Old English "toforan", meaning before or previously). The word refers to a time or situation that existed at that place before a certain point in time.
Think of a specific place ('there') and a time that existed 'before' ('tofore') that moment — this helps you remember that 'theretofore' refers to something that happened previously at that place.