Which word means, to intentionally do something that stops someone from achieving what they want or something from happening as it should?

Some people want to be buried when they die. Others prefer to be ______. 

What do you call the remains of a body after cremation?

When I die, I want you to write, "Here lies Anton, the greatest teacher that ever lived!" on my ____________.

If you describe something or someone as a ______, you mean that it causes you a lot of difficulty, worry or hard work.

My boss is trying to ______ my goal of going home on time, by giving me extra work to do.