n.
Pronunciation: ' f ō
Function: noun
Etymology: Middle English fo, from Old English f ā h, from f ā h, adjective, hostile; akin to Old High German gi f ē h hostile
Date: before 12th century
1 : one who has personal enmity for another
2 a : an enemy in war b : ADVERSARY , OPPONENT
3 : one who opposes on principle <a foe of needless expenditures>
4 : something prejudicial or injurious