The phrase "impressionable age" means the period of time when someone is young and easily influenced or susceptible to being influenced by what they see, hear, or experience. Full definition
On a personal level, I owe Talbot an enormous debt for feeding my hunger for movies at impressionable ages at Lincoln Plaza Cinema, with marathons of the Decalogues or eye - opening screenings of Kids. (filmcomment.com)
«They were at a very impressionable age during the financial crisis,» notes Black. (fortune.com)
When you force something onto a kid at a young impressionable age, it has long term psychological effects. (religion.blogs.cnn.com)