Adjective unconquerable has 2 senses
  1. unconquerable - not capable of being conquered or vanquished or overcome; "a tribute to his courage...and his unconquerable will"- R.E.Danielson; "faced unconquerable difficulties"
    Antonyms:
    conquerable, beatable, vanquishable, vincible, expugnable, stormable, subduable, subjugable
  2. insuperable, unconquerable - incapable of being surmounted or excelled; "insuperable odds"; "insuperable heroes"
    Antonym: surmountable (indirect, via insurmountable)
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