[fault] See: [AT FAULT], [FIND FAULT], [TO A FAULT].

[faultfinding] {n.} Recrimination; nagging; criticism. * /All of this constant faultfinding […]

[favor] See: [CURRY FAVOR], [IN FAVOR OF].

[favorite son] {n.} A man supported by his home state for […]

[fear] See: [FOR FEAR].

[fear and trembling] or [fear and trepidation] {n. phr.} Great fear. […]

[feast one's eyes on] {v. phr.} To look at and enjoy […]

[feast or a famine] {n. phr.} Plenty or very little; big […]

[feather] See: [BIRDS OF A FEATHER FLOCK TOGETHER], [TAR AND FEATHER], […]

[feather in one's cap] {n. phr.} Something to be proud of; […]