Irregular plural nouns are nouns that do not follow the standard rule of adding “-s” or “-es” to form the plural. Instead, they change in different ways, such as changing vowels (man → men), adding “-ves” (leaf → leaves), or staying the same (sheep → sheep). These irregular forms can be confusing for English learners, but mastering them will improve your grammar and fluency in both spoken and written English.
In this article, we’ll explore different types of irregular plural nouns, provide common examples with sentences, and help you avoid common mistakes. At the end, test your knowledge with a 10-question quiz!