けいようし形容詞keiyoushi
1.

A grammatical category in the Japanese language that describes the qualities, states, or emotions of people or things, characterized by its ability to conjugate and finish with "い" in colloquial usage or with "し" in literary contexts.

2.

A type of descriptive word used to convey attributes or conditions of nouns, functioning independently while illustrating properties like beauty, warmth, or joy.

3.

A part of speech within the Japanese language that plays a key role in modifying nouns, allowing for the expression of varying characteristics and feelings through its inflectional forms.

Example:

名詞を修飾するものは、形容詞または形容詞相当語句です。