Assessment of Teaching Assistant Skills (ATAS) 095 Practice Test 2026 - Free Teaching Assistant Skills Questions and Study Guide

When a plural is created by changing the spelling of the word rather than simply adding -s or -es, the noun is described as irregular. This differs from regular nouns, which form plurals by predictable suffixes like -s or -es. Examples such as man turning into men, foot into feet, mouse into mice, and child into children show how the whole word changes instead of just adding a suffix. A plural noun is simply the plural form, not the method of formation, and a noun is any word that names a person, place, thing, or idea. So the term for a noun that forms its plural by changing the spelling is irregular noun.