unpenetrable
/(ˌ)ʌnˈpɛnɪtrəbl/adjective
Incapable of being penetrated; impenetrable.
Origin
Late Middle English; earliest use found in The Book of the Foundation of St. Bartholomew's Church in London. From un- + penetrable.
- well-kent
- well kept
- well kerb
- well kick
- well knit
- well-knotted
- well-knowing
- well-knowledged
- well known
- well-labored
- well-laboring
- well-laboured
- well-labouring
- well-laced
- well-laden
- well-laid
- well-landed
- well-languaged
- well-learned
- well-leaved
- well-led
- well-left
- well-legged
- well-lettered
- well-lighted