invincible

UK: /ɪnˈvɪnsɪb^əl/ US: /ɪnˈvɪnsəbəl/ ,(in vin′sə bəl)

WordReference Random House Learner's Dictionary of American English © 2025

in•vin•ci•ble /ɪnˈvɪnsəbəl/   adj. 

1. that cannot be conquered or defeated:
   an invincible army.
2. that cannot be overcome:
   invincible difficulties.

in•vin•ci•bil•i•ty /ɪnˌvɪnsəˈbɪlɪti/  n. [uncountable] See -vinc-.

WordReference Random House Unabridged Dictionary of American English © 2025

in•vin•ci•ble  (in vin′sə bəl), adj. 

1. incapable of being conquered, defeated, or subdued.
2. insuperable;
   insurmountable:
   invincible difficulties.

• Late Latin invincibilis. See in-³, vincible
• late Middle English 1375–1425

in•vin′ci•bil′i•ty, in•vin′ci•ble•ness, n. 
in•vin′ci•bly, adv. 
Synonyms

• 1. unyielding.
  Invincible, impregnable, indomitable suggest that which cannot be overcome or mastered.
  Invincible is applied to that which cannot be conquered in combat or war, or overcome or subdued in any manner:
  an invincible army; invincible courage.
  Impregnable is applied to a place or position that cannot be taken by assault or siege, and hence to whatever is proof against attack:
  an impregnable fortress; impregnable virtue.
  Indomitable implies having an unyielding spirit, or stubborn persistence in the face of opposition or difficulty:
  indomitable will.

Antonyms

• 1. conquerable.

Collins Concise English Dictionary © HarperCollins Publishers::

invincible / ɪnˈvɪnsəb^əl/ adjective

1. incapable of being defeated; unconquerable

Etymology: 15th Century: from Late Latin invincibilis, from Latin in-¹ + vincere to conquer

inˌvinciˈbility, inˈvincibleness noun

inˈvincibly adverb