Akademik

invincible
I adjective all-powerful, ever-victorious, impossible to defeat, impossible to vanquish, incapable of being overcome, indestructible, indomitable, ineradicable, inexpugnable, inexsuperabilis. inextinguishable, inpermeable, insuperable, insurmountable, invictus, inviolable, invulnerable, irresistible, overpowering, overwhelming, resistless, secure from capture, unable to be overcome, unable to be quelled, unable to be subjugated, unassailable, unbeatable, unconquerable, unsubduable, unvanquishable, unyielding II index defensible, forcible, indomitable, inexpugnable, insuperable, insurmountable, irresistible, potent, powerful

Burton's Legal Thesaurus. . 2006