also: オールマイティー
na-adjective, noun
almighty; all-powerful; versatile
Used as a na-adjective or noun to describe someone or something that is supremely capable, powerful, or effective in many areas.
彼はオールマイティな選手だ。
He is an all-around versatile player.
このツールはオールマイティに使える。
This tool can be used for almost anything.
noun
highest card; wild card
In card games, refers to the most powerful card, such as an ace of spades, or a card that can substitute for any other.
スペードのエースはオールマイティだ。
The ace of spades is the highest card.
このゲームではジョーカーがオールマイティになる。
In this game, the joker acts as a wild card.