Dictionary entry

Forego

Webster's Dictionary 1913

Fore‐go″ (?), v. t. [imp.Forewent 2; p. p.Foregone (?; 115); p. pr. & vb. n.Foregoing.] [See Forgo.] 1. To quit; to relinquish; to leave.

Stay at the third cup, or forego the place. Herbert.

2. To relinquish the enjoyment or advantage of; to give up; to resign; to renounce; — said of a thing already enjoyed, or of one within reach, or anticipated.

All my patrimony,,

If need be, I am ready to forego. Milton.

Thy lovers must their promised heaven forego. Keble.

never forewent an opportunity of honest profit. R. L. Stevenson.

Forgo is the better spelling etymologically, but the word has been confused with Forego, to go before.