That cannot be injured; invulnerable
Not feeling pain; not liable to suffering; insensible
Not physically sensitive; numb.
Not susceptible to or admitting of:
Not capable of being affected or impressed
Readily or easily influenced; suggestible:
Find another word for unimpressionable. In this page you can discover 7 synonyms, antonyms, idiomatic expressions, and related words for unimpressionable, like: impassible, impassive, insensitive, insusceptible, unsusceptible, affect and impressionable.