Meaning of the word "Formative years" in English

What does "Formative years" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

Formative years

US /ˈfɔːr.mə.tɪv jɪərz/
UK /ˈfɔː.mə.tɪv jɪəz/

Phrase

the early years of a person's life, when their character and personality are being developed

Example:
His experiences during his formative years greatly influenced his career choice.
It's important to provide a supportive environment during a child's formative years.