to abstain from; relinquish
The second meaning of the word forego is the same as the meaning of forgo, but if I were using forego, I’d want to avoid confusion by sticking with its first meaning, which is “to precede, as in time or place.” Anthony Lane used forgo in his New Yorker review of C.S. Lewis’s “The Lion, the Witch, and the Wardrobe”: “If the movie has to forgo Lewis’s narrative tone, with its grimly Oxonian blend of the bluff and the twee…that is fine by me.”
I gotta tell you, Karl – this was news to me. When I think of all the times I said, “I think I’ll forego dessert”, I’m embarrassed.
But, Dad, there’s no difference in the pronunciation of the two words, so I’m pretty sure you’re safe. Also, as I mentioned, forego does carry both meanings. No harm done.