Search and compare thousands of words and phrases in American Sign Language (ASL). The largest collection online.
How to sign: able to withstand attack
"an impregnable fortress"; "fortifications that made the frontier inviolable";
Similiar / Same: impregnable, unattackable, inviolable, secure, strong
How to sign: without flaws or loopholes
"an ironclad contract"; "a watertight alibi"; "a bulletproof argument";
Similiar / Same: bulletproof, ironclad, unshakable, watertight
