Able to be infiltrated; possible to infiltrate (either to penetrate, or to be penetrated).

The part of something that faces out; the outer surface. / The external appearance of someone or something. / The space beyond some limit or boundary.

An ethnic group found in India, Pakistan, and Afghanistan around the Kashmir region. / An Indo-Aryan language spoken across the Hindukush region.

plural of antimony / Misspelling of antinomies.