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

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

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

[feet of clay] {n. phr.} A hidden fault or weakness in […]

[feet on the ground] {n. phr.} An understanding of what can […]

[fifth column] {n. phr.} A group or organization within a country […]

[fighting chance] {n. phr.} A chance that necessitates struggle and courage; […]

[fine-tooth comb] {n. phr.} Great care; careful attention so as not […]

[finger in the pie] also [finger in every pie] {n. phr.}, […]

[first base] {n. phr.} 1. The base that must be touched […]