Ha'porth is an old-fashioned word that is short for "halfpennyworth," which refers to a very small amount of something. There are a few other words that can be used as synonyms for this term. For example, "pittance" could be used to describe a small or insufficient amount of money. Similarly, "trifle" could be used to describe something that is insignificant or of little value. "Scraps" and "crumbs" could also be used to describe small amounts of food or leftovers. Finally, "morsel" could be used to describe a small, tasty bite of food.
