Synonyms of unassailable in English:

unassailable


See definition of unassailable

adjective

1‘the world's most unassailable fortress’

SYNONYMS

impregnable, invulnerable, impenetrable, inviolable, invincible, unconquerable, unattackable

secure, safe, safe and sound, well defended, well fortified

strong, stout, indestructible

ANTONYMS

assailable, defenceless

2‘his logic was unassailable’

SYNONYMS

indisputable, undeniable, unquestionable, incontestable, incontrovertible, irrefutable, indubitable, watertight, sound, conclusive, absolute, positive, proven, beyond dispute, beyond question, beyond doubt, beyond a shadow of a doubt, certain, sure, manifest, patent, obvious