Something that's lopsided is crooked or off-balance, like your grandma's lopsided hat, which sits askew on her head.
You can use the adjective lopsided to describe things that are crooked or asymmetrical. A bad toothache might cause one side of your jaw to swell, leaving your face feeling — and looking — lopsided. You might say that your school's student council election is lopsided if one candidate is clearly more qualified than the other. The word lopsided was originally lapsided, and in the early 1700s it almost always referred to a tilting ship.