-ness
"-ness" in Japanese
さ
-sa
(appended to adjectives to form nouns meaning "the state of being...", "the quality of being...", or "the measure of being...")
性
-sei
(appended to adjectives to form nouns meaning "the state of being...", "the quality of being...", or "the measure of being...")
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.