Kanji for "Invincible"
Here's my question:
what is this means: 無敵
I've tried to search kanji for "invincible, undefeated" and I've got the same Kanji; Muteki as like this: 無敵
so is it means the same thing or in Japanese you use something else for invincible.

Question

Answer

MUTEKI is so strong that there is nothing that becomes a rival(match,opposition etc). 
It uses for expressing a very strong thing. 
Daily, it seldom uses.
It often uses in scenes, such as tv-game and a match and a fight and a tournament.

Answer

無 is the same as ない.
So it means "nothing" or "doesn't exist"
敵 means "rival" or "opponent"
So I think the nuance may be a little different than the English word, but you can probably use it interchangeably in a way that can be understood.

Answer

Thank you for your answer, I also got an answer from another user. His answer was just like this:
"Yes "invicible" is "無敵" in Japanese.
無 means "nothing".
敵 means "enemy".
無敵 means "There is no enemy." directly and it means "invincible".

If I need to use other word, I use "不屈（fukutsu）"."

And thank you again :)