noun, noun which may take the genitive case particle 'no'
person around forty; around forty
Abbreviation of 'around forty'. Commonly refers to women in their early forties, but can be used for any gender. Often used in fashion, lifestyle, and marketing contexts.
彼女はアラフォーだけど、とても若く見える。
She's around forty, but she looks very young.
アラフォー世代の女性向けの雑誌が増えている。
Magazines targeting women in their early forties are increasing.