This is the 2187th most frequent Japanese word.
決断
"Decision" or "determination."
決断 refers to an important decision made by the individual (彼) affecting a situation or context (会社の将来).
彼の決断は会社の将来を大きく左右しました。
His decision greatly influenced the company's future.
決断 is used to express a general need to be confident about one's personal choices or decision-making.
自分の決断に自信を持つことは大切です。
It is important to have confidence in one's own decisions.
決断 signifies a critical choice in a challenging and impactful life context (人生の重大な場面).