Inexpugnable
Part of speech: adjective
Definition: Impossible to eliminate or destroy; impregnable
Unconquerable
Part of speech: adjective
Definition: Not conquerable; indomitable.
Inexpugnable as an adjective is impossible to eliminate or destroy; impregnable while Unconquerable as an adjective is not conquerable; indomitable.
Part of speech: adjective
Definition: Impossible to eliminate or destroy; impregnable
Part of speech: adjective
Definition: Not conquerable; indomitable.
We hope you now know whether to use Inexpugnable or Unconquerable in your sentence.