theretofore

adv. 在那以前, 到那时为止

释义与例句

adv.
  1. 1.

    Until that time.

    正式
  2. 2.

    Before that.

    正式

词源

From Middle English ther-to-fore, þeretofore, þer to-fore, þer toforn, þær toforen, from Old English þǣr tōforan, equivalent to there + tofore.

来源：wiktionary