1. unassailable - adjective
· immune to attack; incapable of being tampered with; "an impregnable fortress"; "fortifications that made the frontier inviolable"; "a secure telephone connection"
Synonym(s): impregnable, inviolable, secure, strong, unattackable
2. unassailable - adjective
· impossible to assail
Synonym(s): untouchable
3. unassailable - adjective
· without flaws or loopholes; "an ironclad contract"; "a watertight alibi"; "a bulletproof argument"
Synonym(s): unshakable, watertight, bulletproof
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