formative
Definitions
Serving to form something, especially having a profound influence on a person's development.
Relating to the process of development or growth.
Examples
His formative years spent living abroad had a profound impact on his worldview.
The teacher provided formative feedback throughout the project to help the students improve their work.
Synonyms
developmental influential shaping malleable impressionable constitutive foundational
Antonyms
destructive final stagnant fixed uninfluential terminal conclusive