Unrivaled
Invincible
noun, な adjective, の adjective
You have nothing when it comes to enemies. Why? It's not because you're super kind and everyone likes you. No, it's that you've defeated anyone who's tried. You are unrivaled and invincible.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
しりとりで、コウイチは無敵だ。
Koichi is invincible at Shiritori.
整形して、みんなから可愛すぎる無敵な女だって思われたい。
I wanna get plastic surgery to make people think that I'm an adorable, unrivaled woman.
うちの息子は、無敵のヒーローに憧れています。
Our son admires invincible heroes.