As adjectives the difference between impressable and impressionable
is that impressable
is while impressionable
is being easily influenced (especially of young people).
As a noun impressionable is
an impressionable person.
Being easily influenced (especially of young people).
An impressionable person.
* 1942 , Frank Gervasi, War Has Seven Faces
- They were the faces of the same gentlemen who plied the corruptibles in Rumania with cash and impressed the impressionables with Germany's power.