impressionable
adjective
UK/ɪmˈpreʃ.ᵊn.ə.bᵊl/
US/ɪmˈpreʃ.ᵊn.ə.bᵊl/
Definitions of impressionable adjective
easily influenced, especially at a young age
At that impressionable age, he was easily swayed by his peers.
Younger individuals are generally more impressionable than older adults.
She was fortunate to have a mentor who positively influenced her, as she was at an impressionable stage.