noun, noun which may take the genitive case particle 'no'
mature age; middle-aged and beyond
Refers to people past middle age who have gained life experience and wisdom; often used in contexts like 熟年世代 or 熟年夫婦. Not a precise age bracket.
Travel for the mature generation is popular.
That middle-aged couple always gets along well.
middle-aged couple
late-life divorce; divorce after many years of marriage
Compound of 熟 (じゅく, 'mature, ripen') and 年 (ねん, 'year, age'). The exact origin is uncertain, but it likely emerged as a euphemistic or positive term for older age.