FOREGO
Fore*go", v. t. [imp. Forewent 2; p. p. Foregone; p. pr. & vb. n.
Foregoing.] Etym: [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. [He] never forewent an opportunity of honest profit. R. L. Stevenson.

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

FOREGO Fore*go", v. t. Etym: [AS. foregan; fore + gan to go; akin to G. vorgehen to go before, precede. See GO, v. i.]

Defn: To go before; to precede; — used especially in the present and
past participles.
Pleasing remembrance of a thought foregone. Wordsworth.
For which the very mother's face forewent The mother's special
patience. Mrs. Browning.
Foregone conclusion, one which has preceded argument or examination;
one predetermined.

FOREGOER
Fore*go"er, n.

1. One who goes before another; a predecessor; hence, an ancestor' a progenitor.

2. A purveyor of the king; — so called, formerly, from going before to provide for his household. [Obs.]

FOREGOER
Fore*go"er, n. Etym: [Etymologically forgoer.]