IPA: /ɪnˈvɪnsəbl/
KK: /ɪnˈvɪnsəbl/
Not able to be defeated or overcome; unbeatable.
The team's invincible spirit helped them win the championship.
Comparative: more invincible
Superlative: most invincible
Invincible → It is formed from "in-" (meaning not) and "vincere" (meaning to conquer or overcome). The word "invincible" means not able to be conquered or overcome.
Think of 'not' ('in-') being able to 'conquer' ('vincere') — that's why invincible means unable to be defeated.