若作わかづくり

1dressing oneself up to look young ; altering one's appearance to look young ; dressing younger than one's age Translated by Jiyomi

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

JMdict entry 1762510. Source and licence.