Middle English is called the period of weakened inflections.

Old Norse had no influence on Middle English.

In Middle English many word endings became weaker and disappeared.

The plural ending -es became dominant in Middle English.

The plural form oxen comes from the weak declension.

In Middle English, nouns had four cases like in Old English.

Middle English reduced the number of cases to Common and Genitive.

Middle English used natural gender instead of grammatical gender.

Adjectives in Middle English had many different endings.

In Middle English adjectives had only two forms: base form and -e form.

The definite article the replaced OE forms like sē, sēo, and þæt.

Strong verbs form the past tense by adding -ed.

Many strong verbs became weak in Middle English.

The future tense with shall and will developed in Middle English.

Word order (S–V–O) became more important in Middle English.