unimpressionable

Mane (Îngilîzî)

Not impressionable.

Hevwate

steely

blithe

careless

casual

detached

halfhearted

half-hearted

heedless

impassive

indifferent

inflexible

insensible

listless

neglectful

negligent

offhanded

regardless

remiss

unaffected

uncaring

unconcerned

unhelpful

unimpressed

uninfluenced

uninterested

unmoved

unresponsive

unsympathetic

unsympathizing

untouched

iron-bound

unswayed

unsupportive

blase

unsympathising

Etîmolojî (Îngilîzî)

From un- + impressionable.