1Success or achievement — accomplishing a goal or obtaining the desired result.
実験は予想以上の成功を収めた。
The experiment was more successful than expected.
プレゼンが成功して、無事に契約を獲得できた。
The presentation was a success, and we were able to secure the contract.
彼女のダイエットは大成功で、五キロも痩せた。
Her diet was a huge success — she lost as much as five kilograms.
何度も失敗を重ねた末に、ようやく成功した。
After repeated failures, we finally succeeded.
2Succeeding in life — attaining social or economic standing and prosperity through one's career or business, close in nuance to '出世.'
彼は一代で事業を成功させ、大きな財を築いた。
He built a successful business from scratch and amassed a great fortune.
田舎から出てきて、都会で成功を夢見る若者は多い。
Many young people leave the countryside dreaming of success in the city.
今でこそ成功者と呼ばれる彼にも、若い頃は多くの挫折があった。
Even he, now called a success, had many setbacks when he was young.