確かっ固こ不ふ動どうかっこふどうじ字FuriganaMeanings1noun which may take the genitive case particle 'no', noununshakeable; steadfast; firm; absolutely secureyojijukugo (four-character idiom)›Describes a belief, attitude, support, or position that is completely unwavering and cannot be moved. Often used in formal or written contexts.