心 (심) – heart; mind
The character 심 (心) generally means “heart,” “mind,” or “inner feelings,” and is widely used in Korean to express emotions, thoughts, intentions, or mental states. Words containing 心 often describe how we feel inside—such as love, worry, fear, or determination—as well as our mindset, attitude, and psychological conditions. Because of this, many Korean words with 心 relate to emotions, mental activities, and the inner workings of the heart and mind.
단어 Words
심리학(心理學) – psychology
심장(心臟) – heart (organ)
관심(關心) – interest
열심(熱心) – enthusiasm; effort
안심(安心) – relief
중심(中心) – center
결심(決心) – determination
양심(良心) – conscience
의심(疑心) – doubt; suspicion
진심(眞心) – true heart; sincerity

문장 Sentences
심리학은 인간의 마음과 행동을 연구하는 학문이다: Psychology is the study of the human mind and behavior.
심장은 우리 몸에서 가장 중요한 장기 중 하나이다: The heart is one of the most important organs in our body.
그는 한국어에 큰 관심을 가지고 있다: He has great interest in the Korean language.
그녀는 열심히 공부해서 장학금을 받았다: She studied hard and received a scholarship.
시험이 끝나고 나니 마음이 놓여서 안심이 되었다: After the exam ended, I felt relieved.
서울은 한국의 정치와 경제의 중심이다: Seoul is the centre of Korea’s politics and economy.
그는 매일 운동을 하기로 결심했다: He made up his mind to exercise every day.
양심에 따라 정직하게 행동해야 한다: One must act honestly according to one’s conscience.
그녀는 그의 말을 의심하기 시작했다: She began to doubt his words.
그의 말은 거짓이 아니고 진심이었다: His words were not lies but sincerity.