Definitions

1. noun

the inflection or modification of words to indicate grammatical function, especially in inflected languages such as Latin or Greek.

“The grammar book explained the various declensions of Latin nouns.”

2. noun

a series of inflected forms of a word, especially in a particular grammatical function.

“He studied the declensions of the verb ‘to be’ in ancient Greek.”

3. verb

to change or modify the form of something, especially to indicate a grammatical function.

“The linguist showed how to declension the verb ‘to go’ in different languages.”

4. verb

to cause something to change or modify its form, especially to indicate a grammatical function.

“The teacher helped her students declension the nouns in their essay.”