字Study Chinese Characters
非

fēi not; non-

Component (a building block) — not the same thing as a radical or a sound component. · 8strokes

Characters that use it as a component

匪啡徘排菲诽韭

Characters filed under it as a radical

Kangxi radical no.175 · 8strokes — The 214 Kangxi radicals

Filed under it in a dictionary. That is a lookup convention — it does not mean it is the only part the character is built from.

非