The word for today is…
forfend (verb):
1a archaic : forbid
b: to ward off : prevent
2: protect, preserve
Source : Merriam -Webster
Etymology : Forfend is an unusual word in that its most commonly used sense is considered archaic, meaning it survives in English chiefly in specialized uses. When forfend was first used in the 14th century, it meant “to forbid.” It still does but only in phrases, like “heaven forfend” or “God forfend,” that have an exaggeratedly old-timey ring to them. (The use is also typically humorous and/or ironic.) Put another way, substituting forfend for forbid in any other context would sound strange, as in “students are forfended from using cell phones in the classroom.” Other senses of forfend, including “to protect or preserve” and “to ward off or prevent,” are current, though much less common. The fend part of the word comes from the same Latin source as defend.
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