Simple word NO - how to say it...?

It's one of the first words children learn and yet so many adults struggle.

The art of rejection is a communication matter - if you say it in the wrong way, it can have very unfortunate consequence. At the same time - not refusing can be even worse. There are always multiple options how to say no - depending on context. Sometimes the approach is soft, not to hurt feelings, other times you need to be firm... Relationships matter - manager, peers, stakeholders - different levels require different words. Do you find yourself in situations where you don't know, #howtosay?