Worth a shot: When something is worth a shot, it means it is worth trying.

Worth your salt: It means someone or something deserves respect.

Wouldn't pull the skin off a rice pudding: This idiom is used to signify that something/someone is not very powerful.

Wouldn't touch it with a bargepole: If you say this about something, it means you don’t want to have anything to do with it or you will not approach it under any circumstances.

Wrap yourself in the flag: To pretend to be doing something out of patriotism or loyalty to something but that is not the case, as they are doing it for their own selfish reasons.

Writing on the wall: It means that a danger that was yet to come can now be seen or is now apparent.

Wrench in the works: To put a wrench in the works is to spoil or ruin something, like a plan.— Ahzam Ahmed