by construal of fore- as an adj., hence nominalized; fore and aft perhaps as translation of Dutch or Low German; sense “before” (defs 6, 9) perhaps continuation of Middle English,Old Englishfore in this sense, or as aphetic form of afore
[fawr, fohr] /fɔr, foʊr/
(used as a cry of warning to persons on a course who are in danger of being struck by the ball.)
O.E. fore (prep.) "before, in front of;" (adv.) "before, previously," common Gmc. (cf. O.H.G. fora, O.Fris. fara, Ger. vor, Goth. faiura, O.N. fyrr "for"); from PIE *per-/*pr- (cf. Skt. pura "before, formerly;" Avestan paro "before;" Hittite para- "on, forth;" Gk. paros "before," para "from beside, beyond," peri "around, about, toward," pro "before;" L. pro "before, for, on behalf of, instead of," prae "before," per "through, for;" O.C.S. pra-dedu "great-grandfather"). The warning cry in golf is first recorded 1878, probably a contraction of before.