[foe] n [ME fo, fr. OE fah, fr. fah, adj., hostile; akin to OHG gifeh hostile] (bef. 12c) 1: one who has personal enmity for another
2. a: an enemy in war b: adversary, opponent
3: one who opposes on principle "a ~ of needless expenditures"
4: something prejudicial or injurious