To exert one's strength or abilities; to put forth effort or perform to one's potential.
試合で自分の力を出せなくて悔しい。
I'm frustrated that I couldn't perform to my ability in the match.
最後の数分で彼は本当の力を出した。
In the last few minutes he showed his true strength.
新しい環境でも早く力を出せるようにサポートします。
We'll support you so you can quickly perform well even in a new environment.