SUFFIX
(用于形容詞后構成名詞)表示“狀態”，“性質”
-ness is added to adjectives to form nouns which often refer to a state or quality. For example, 'sadness' is the state of being sad and 'kindness' is the quality of being kind.
例句
'This is not good,' he said with great seriousness.
他特別嚴肅地說：“這可不好?！?/i>