Banana discard refers to the act of getting rid of a banana that has become unusable or spoiled. However, there are various synonyms for this term. The most common word used is "dispose of", which means to get rid of something in a careful and appropriate manner. Another synonym is "discard", which means to throw something away as unusable. "Abandon" is also a suitable synonym that means to leave something behind without any intention of returning. Additionally, "jettison" can be used to describe the act of throwing something overboard or to get rid of something unwanted. Finally, "eliminate" refers to completely removing something from existence or sight.