INVIN'CIBLE, adjective [Latin in and vinco, to conquer.] 1. Not to be conquered or subdued; that cannot be overcome; unconquerable; as an invincible army. 2. Not to be overcome; insuperable; as, an invincible obstacle, error, habit or objection.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI