‘Expectation‘ in general stands for a belief of happening or awaiting of something inter alia a belief of something that is bound to happen in future. Its understanding varies from people to people. Some consider it a curse, while others believe it to be a blessing in disguise. I personally believe it to be an excuse. Blaming others (or a belief) for your own wrong is what people call expectations. If a person fails to act in accordance to your will he has failed you. Here, he is not the one to be blamed but yourself. For the “expectation” was yours in the first place. Call it a desire to place someone under your will; wanting others to act in accordance to your will without communicating anything is the terminology “expectation”.