for·fend / fôrˈfend/ • v. [tr.] 1. archaic avert, keep away, or prevent (something evil or unpleasant).2. (also fore·fend) protect (something) by precautionary measures.PHRASES: Heaven (or God) forfend archaic or humorous used to express dismay or horror at the thought of something happening: Invite him back? Heaven forfend! God forfend that we should allow the media to tell us how to run our business.