Philia ( or ; ), often translated "brotherly love", is one of the four ancient Greek words for love: philia, storge, agape and eros. In Aristotle's Nicomachean Ethics, philia is usually translated as "friendship" or affection. The complete opposite is called a phobia.

Suffixes with the common part -phil- (-phile, -philia, -phily, -philic) are used to specify some kind of attraction or affinity to something. They are antonymic to suffixes -phob-.