How to remove background, and only keep foreground?

I have and image which I have removed the background from. Put when I insert this image in word, the background is white. The only way I then can remove the background is to crop the image. But the foreground is a person, so I'm not able to crop the image in angles. 

Not sure if I'm able to explain my self here. 

I want to have only the person, like I printed a picture, and then cut around the person with a scissor.