formative
Definition
Having a strong influence on the development of something, especially in early stages.
日本語 発展に強い影響を与える
Example
"Her high school years were a formative period in shaping her values."
Having a strong influence on the development of something, especially in early stages.
日本語 発展に強い影響を与える
"Her high school years were a formative period in shaping her values."