This is the 8938th most frequent Japanese word.
気合
"気合" (kiai): Spirit, energy, or focused determination, often used to describe mental or physical effort.
The term '気合' in this sentence refers to gathering mental and emotional energy and motivation to prepare for a challenging event or activity.
彼は試合前に気合を入れていた。
He psyched himself up before the match.
Here, '気合' implies putting one's full energy and enthusiasm into an action or performance.
気合を込めて演技をした。
She performed with full spirit.
In this case, '気合' represents determination or mental resolve required to achieve success.