中古英语词元的变形形式，依其词性分类。
- Category:中古英语动词变位形式：词形产生变化（即变位）来表示与原形不同的语法关系的中古英语动词形式。
- Category:中古英语名词变格形：中古英语 nouns that are inflected to display grammatical relations other than the main form.
- Category:中古英语形容词变格形：中古英语 adjectives that are inflected to display grammatical relations other than the main form.
- Category:中古英语限定词变格形：中古英语 determiners that are inflected to display grammatical relations other than the main form.