Abandon means to leave something or someone behind completely, usually without planning to return. When a family abandons an old house, they move away and never come back. When sailors abandon ship during an emergency, they leave the vessel because staying would be too dangerous.

The word carries a sense of finality and often suggests something troubling. A half-finished treehouse abandoned in the backyard sits unfinished because the builders lost interest and stopped working.

You can also abandon ideas or plans. If you abandon your goal of learning piano, you stop practicing and give up entirely. If a team abandons their game strategy because it isn't working, they completely drop that approach and try something different.

As a noun, abandon means a lack of restraint. When kids play with wild abandon, they play with total freedom and joy, not holding back or worrying what others think. This meaning is quite different: instead of leaving something behind, you're throwing yourself fully into the moment.