Words similar to theretofore

Example sentences for: theretofore

How can you use “theretofore” in a sentence? Here are some example sentences to help you improve your vocabulary:

The Portuguese also sailed down the west coast of Africa, going beyond Cape Bojador in 1434, a feat theretofore considered to be impossible.
Would Mellinkoff banish such useful words as heretofore, theretofore, hereto, and therefor ? Would we abandon the subjunctive mood, adverbs, Latin idioms, bon mots, and the like?