fricative

n, adj (consonant) made by forcing air through an opening made narrow by bringing the tongue or lips near to another part of the mouth 由摩擦产生的（辅音）: / f, v, W/ are fricatives. /f/、 /v/、 /W/是摩擦辅音.

freshen, freshener, fresher, freshly, freshman, freshness, freshwater, fret, fretful, fretfully, fretsaw, fretwork, Freudian, Freudian slip, Fri, friability, friable, friar, friary, fricassee, friction, Friday, fridge, fridge-freezer, fried, friend, friendless, friendliness, friendly, friendly match (also friendly), friends, friendship, frieze, frig, frigate, frigging, fright, frighten, frightened, frightening,