My first four letters are when you yearn for someone My ending keeps doctors away.

You will find me under a bridge, you will find me in your foot. You will find me at McDonald’s but also in front of a bishop.

I go through highs and lows I often fold in on myself You may need me if you don’t want to forget Take me when you have something to sell

Remove my first letter and I’m beneath you Remove my second for a talented group Nix two and five to get rid of something But altogether, I’m really quite boring

I slip through a doorway when nobody sees, I’m pulled from a barrel to put minds at ease. I’m written, not finished- a plan taking shape, I’m the pool where contenders await their escape.