Alternative form of anybody who is anybody

(informal, especially as a question) Used to indicate multiple things are difficult to tell apart

Alternative form of what's the good of

One's life has reached its end; one is dead or soon to die.

The wife, not the husband, is in charge of the household.

(sometimes proscribed) Alternative form of the proof of the pudding is in the eating

(often humorous) Even if a person is in his or her senior years, with gray hair, he or she can still have ambition and energy, especially sexual energy.

One can only claim that something is a success after it has been tried out or used.

(among word-game enthusiasts) Used to turn semordnilaps into palindromes.

Alternative form of it's not the whistle that pulls the train