[for the time being] also {literary} [for the nonce] {adv. phr.} […]

[for the worse] {adj. phr.} or {adv. phr.} For something that […]

[forever and a day] {adv. phr.}, {informal} For a seemingly endless […]

[forever and ever] {adv. phr.} Forever; always. - Used for emphasis, […]

[fourth-class(2)] {adv.} By fourth-class mail. * /How did the company mail […]

[from hand to hand] {adv. phr.} From one person to another […]

[from mouth to mouth] {adv. phr.} See: [BY WORD OF MOUTH].

[from pillar to post] {adv. phr.} From one place to another […]

[from rags to riches] {adv. phr.} Suddenly making a fortune; becoming […]

[from scratch] {adv. phr.}, {informal} With no help from anything done […]