1. peculiarity, uniqueness, characteristic

noun (common) (futsuumeishi) adjectival nouns or quasi-adjectives (keiyodoshi) nouns which may take the genitive case particle 'no'

2. understood only by oneself

noun (common) (futsuumeishi) nouns which may take the genitive case particle 'no' adjectival nouns or quasi-adjectives (keiyodoshi)