far post

a bridge too far

A step or action that is too ambitious; an act of overreaching.

as far as one knows

To the best of one's knowledge, as far as someone knows or possible information to be gathered about the topic, subject, aspect, or situation.

be left at the post

To be beaten from the beginning of a competition or race.

dumb as a post

Utterly mute; lacking the ability to speak.

far and away

By a large degree or margin; greatly (used before comparative and superlative adjectives).

far be it

A disclaimer stating that something should not come to pass, or that a person would never do or think a certain thing.

far cry

A long distance, in terms of dissimilarity or difference.

few and far between

Rare and scarce; hard to find.