unassailable
1.
(
satellite adjective
) impossible to assail
Synonyms:
untouchable
2.
(
satellite adjective
) without flaws or loopholes; "an ironclad contract"; "a watertight alibi"
Synonyms:
ironclad
,
unshakable
,
watertight
3.
(
satellite adjective
) able to withstand attack; "an impregnable fortress"; "fortifications that made the frontier inviolable"
Synonyms:
impregnable
,
inviolable
,
secure
,
strong
,
unattackable
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