formidable enemy; strong opponent; tough adversary
Used for a powerful rival or opponent in competition, battle, sports, or games. Carries a nuance of respect or challenge.
次の試合の相手は強敵だ。
Our next opponent is a formidable one.
彼は強敵を倒して優勝した。
He defeated a strong opponent and won the championship.
We ended up facing a formidable opponent in the final.
The team defeated a formidable opponent and won the championship.
He fearlessly took on the formidable opponent.
It seems a formidable opponent will show up in the next match.