"Impierceable" is a word in ENGLISH

Capable of being abated; as, an abatable writ or nuisance.

Capable of being abdicated.

abíl - (Sp. hábil) Capable, especially with regard to procreation. Mostly applied to domestic animals.

abíl-abíl - Dim. of abíl. Rather capable.

Having sufficient power, strength, force, skill, means, or resources of any kind to accomplish the object; possessed of qualifications rendering …

Capable of being abolished.

In medical Jurisprudence. A drug or medicine capable of, or used for, producing abortion

The act of giving premature birth; particularly, the expulsion of the human fetus prematurely, or before it is capable of …

Capable of being abrogated.

Capable of being thought or conceived by itself alone; unconditioned; non-relative.

Capable of being absorbed or swallowed up.

Capable of being inflamed or kindled; combustible; inflammable.

Capable of being accented.

Capable, worthy, or sure of being accepted or received with pleasure; pleasing to a receiver; gratifying; agreeable; welcome; as, an …

Capable of being acclimated.

Capable of being acclimatized.

Capable of being accomplished; practicable.

Capable of being accounted for; explicable.

Capable of being achieved.

Capable of being acidified, or converted into an acid.