B1 verb 3 min read

계발하다

To make a skill or ability better through practice.

gyebalhada

Explanation at your level:

At this level, think of 계발하다 as 'getting better.' If you study hard, you are 계발-ing your brain. It is like a plant growing bigger.

You use 계발하다 when you talk about your hobbies or skills. For example, if you practice soccer to get better, you are 계발-ing your athletic skills. It is about your own growth.

Intermediate learners use this word to talk about professional goals. 'I want to 계발 my English skills' is a common way to express a desire for improvement. It sounds more professional than just saying 'study.'

At this level, you distinguish between 개발 (physical) and 계발 (mental). You use it when discussing personal growth, leadership training, or educational programs designed to help people reach their potential.

In academic or professional settings, 계발하다 is used to describe systematic improvement. You might discuss 'curriculum 계발' or 'strategic talent 계발.' It implies a structured approach to growth rather than random practice.

At the mastery level, you understand the nuance of 'latent potential.' 계발하다 is the act of bringing out what is hidden. It is often used in philosophical discussions about human nature, self-actualization, and the cultivation of virtue or wisdom.

Word in 30 Seconds

  • Used for human potential.
  • Distinct from physical development.
  • Common in self-help contexts.
  • Active, positive verb.

When you hear the word 계발하다, think of it as 'unlocking' or 'polishing' something that is already inside you. Unlike 개발하다 (which often refers to developing land or technology), 계발하다 is almost exclusively used for human potential, intelligence, and skills.

It implies that you have a seed of talent, and you are providing the water and sunlight to help it grow. Whether it is your creativity, your leadership skills, or your ability to speak a foreign language, if you are working to make those abilities stronger, you are 계발하는 중!

It is a very positive and proactive word. It suggests a journey of growth rather than just a one-time task. As your teacher, I love this word because it reminds us that we are all works in progress, constantly trying to become the best versions of ourselves.

The word 계발하다 is rooted in Sino-Korean characters (Hanja): 啓 (계) meaning 'to open' or 'to enlighten,' and 發 (발) meaning 'to shoot out' or 'to develop.' Together, they literally mean 'to open and release' one's potential.

Historically, this term was associated with the enlightenment of the mind. It evolved from classical texts where it described the process of a student opening their mind to wisdom. It is a cousin to the word 개발 (development), but they split paths in usage: 개발 handles physical objects and infrastructure, while 계발 handles the human spirit and intellect.

In modern Korean, the distinction is strictly maintained to ensure we don't confuse 'building a road' with 'building a person's character.' It is a beautiful example of how language evolves to categorize the physical world versus the internal, human world.

You will most commonly see 계발하다 paired with words related to the mind or specific talents. Common collocations include 자기계발 (self-development), 능력 계발 (ability development), and 창의력 계발 (creativity development).

It is used in both formal and casual settings. In a business context, you might hear a manager say, 'We need to focus on 직원들의 역량 계발' (developing employee capabilities). In a casual conversation, you might say, 'I am reading books for 자기계발' (self-improvement).

Remember, you don't 계발 a building or a computer program. If you try to say 'I am 계발-ing my phone,' native speakers will be very confused! Stick to using it for people, minds, and talents.

While 계발하다 is a standard verb, it is the heart of several common expressions:

  • 자기계발에 힘쓰다: To strive for self-improvement.
  • 잠재력을 계발하다: To develop one's latent potential.
  • 계발의 기회: An opportunity for growth.
  • 창의성을 계발하다: To nurture creativity.
  • 능력 계발을 도모하다: To plan for skill enhancement.
These expressions are staples in resume writing, interviews, and goal-setting conversations. They all carry a tone of ambition and dedication.

As a regular verb, 계발하다 follows the standard -하다 conjugation pattern. You can say 계발한다 (present), 계발했다 (past), or 계발할 것이다 (future).

Pronunciation-wise, it is pronounced [계발하다]. A common mistake is to mispronounce it as [개발하다], which sounds like 'development' (of things). Keep the 'gye' (계) sharp and distinct. It rhymes loosely with other -하다 verbs like 개발하다, 생활하다, and 대화하다.

When using it in a sentence, it usually takes an object marked by the particle -을/를. For example: 나는 능력을 계발한다 (I develop my ability). It is a transitive verb, so it always needs that object to make sense!

Fun Fact

The character 啓 literally depicts a hand opening a door.

Pronunciation Guide

UK gye-bal-ha-da

Standard Korean pronunciation.

US gye-bal-ha-da

Standard Korean pronunciation.

Common Errors

  • Mixing up 'gae' and 'gye'
  • Dropping the 'h' sound
  • Mispronouncing as 'gaebal'

Rhymes With

개발하다 생활하다 대화하다 탈환하다 순환하다

Difficulty Rating

Reading 2/5

Common in written text.

Writing 2/5

Useful for essays.

Speaking 2/5

Used in professional talk.

Listening 2/5

Clear pronunciation.

What to Learn Next

Prerequisites

능력 재능 공부

Learn Next

역량 잠재력 함양

Advanced

자아실현 자기계발

Grammar to Know

-하다 Verb Conjugation

계발하다 -> 계발한다

Object Particle -을/를

능력을 계발하다

Examples by Level

1

나는 실력을 계발한다.

I / skill / develop.

Simple present.

2

나는 꿈을 계발한다.

3

그는 재능을 계발한다.

4

우리는 능력을 계발한다.

5

그녀는 노래를 계발한다.

6

공부를 해서 계발한다.

7

매일 계발한다.

8

열심히 계발한다.

1

자기계발을 시작했다.

2

창의력을 계발하고 싶다.

3

운동으로 체력을 계발한다.

4

좋은 습관을 계발하자.

5

그는 재능을 계발 중이다.

6

독서는 지능을 계발한다.

7

새로운 기술을 계발한다.

8

나만의 능력을 계발한다.

1

자기계발 서적을 읽는 것이 좋다.

2

회사는 인재 계발에 투자한다.

3

잠재력을 계발하는 것은 중요하다.

4

언어 능력을 계발하는 방법.

5

창의적 사고를 계발해야 한다.

6

취미를 통해 재능을 계발한다.

7

리더십을 계발하고 싶습니다.

8

전문성을 계발하기 위해 노력한다.

1

그는 자기계발을 위해 학원에 다닌다.

2

잠재된 재능을 계발할 기회이다.

3

지속적인 자기계발이 필요하다.

4

창의성 계발을 위한 교육 프로그램.

5

자신의 역량을 계발하는 과정.

6

성공을 위해 능력을 계발하라.

7

예술적 감각을 계발하는 연습.

8

다양한 경험을 통해 자아를 계발한다.

1

인적 자원 계발은 기업의 핵심이다.

2

그는 자기계발에 몰두하는 사람이다.

3

잠재력을 계발하여 전문가가 되었다.

4

교육은 인간의 능력을 계발한다.

5

창의적 문제 해결 능력을 계발하다.

6

자기계발의 중요성을 강조했다.

7

꾸준한 노력으로 재능을 계발했다.

8

미래를 위해 역량을 계발하는 중이다.

1

인간의 잠재력을 계발하는 것은 고귀한 일이다.

2

지적 성숙을 위한 끊임없는 자기계발.

3

그는 자신의 철학적 사유를 계발했다.

4

예술적 영감을 계발하여 명작을 남겼다.

5

자기계발은 평생에 걸친 과업이다.

6

잠재된 가능성을 계발하여 꽃피우다.

7

사회적 가치를 창출하며 자아를 계발한다.

8

내면의 힘을 계발하는 수련을 했다.

Common Collocations

자기계발
능력을 계발하다
재능을 계발하다
창의성을 계발하다
계발에 힘쓰다
잠재력을 계발하다
역량을 계발하다
계발 프로그램
계발 서적
지속적으로 계발하다

Idioms & Expressions

"자기계발의 시대"

An era focused on self-improvement.

우리는 자기계발의 시대에 살고 있다.

neutral

"계발의 여지"

Room for improvement.

아직 계발의 여지가 많다.

neutral

"잠재력 계발"

Unlocking potential.

잠재력 계발은 필수적이다.

formal

"계발을 꾀하다"

To plan for improvement.

능력 계발을 꾀하는 중이다.

formal

"계발에 전념하다"

To dedicate oneself to growth.

그는 자기계발에 전념한다.

neutral

"계발을 도모하다"

To seek improvement.

우리는 능력 계발을 도모한다.

formal

Easily Confused

계발하다 vs 개발하다

Sounds very similar.

개발 is for things/land; 계발 is for human talent.

아파트 개발 vs 재능 계발

계발하다 vs 발전하다

Both mean improvement.

발전 is about progress/state; 계발 is about internal growth.

기술이 발전하다 vs 능력을 계발하다

Sentence Patterns

A2

Subject + [Skill] + 를 + 계발하다

나는 외국어 실력을 계발한다.

B1

Subject + 는 + 자기계발 + 에 + 힘쓴다

그는 자기계발에 힘쓴다.

B2

Subject + 는 + [Potential] + 을 + 계발할 + 기회이다

이것은 잠재력을 계발할 기회이다.

Word Family

Nouns

계발 The act of developing/enlightenment

Verbs

계발되다 To be developed (passive)

Related

개발 Similar sound, different meaning (physical vs human)

How to Use It

frequency

7

Formality Scale

Academic Professional Casual

Common Mistakes

개발하다 instead of 계발하다 for skills 계발하다
개발 is for physical things; 계발 is for human potential.
계발을 시키다 계발하다
It is an active verb; don't add causative unless someone else is doing it.
계발을 받다 계발하다
Usually you do the action yourself.
계발되다 (passive) 계발하다 (active)
Focus on the active effort of the person.
Using with inanimate objects Use for people/skills
Don't say 'phone-을 계발하다'.

Tips

💡

The 'People' Rule

If it has a brain or a heart, use 계발.

💡

Resume Power

Use it to talk about your growth.

🌍

Self-Help Culture

Korea has a huge '자기계발' culture.

💡

The -하다 suffix

Treat it like any other -하다 verb.

💡

Sharp 'Gye'

Don't let it slide into 'Gae'.

💡

Don't build with it

Don't use it for construction.

💡

Hanja Roots

It means opening potential.

💡

Pair it

Always pair it with '능력' or '재능'.

Memorize It

Mnemonic

Gye (Open) + Bal (Shoot out) = Opening your talent like a flower shooting out.

Visual Association

A lightbulb turning on inside a person's head.

Word Web

Growth Talent Potential Study Practice

Challenge

Write one thing you want to '계발' this month.

Word Origin

Sino-Korean

Original meaning: To open (啓) and emit/develop (發)

Cultural Context

None, it is a very positive, encouraging word.

Equivalent to 'self-improvement' or 'personal development'.

Used in many motivational books in Korea.

Practice in Real Life

Real-World Contexts

School/University

  • 능력을 계발하다
  • 창의성 계발
  • 학습 계발

Workplace

  • 역량 계발
  • 인재 계발
  • 자기계발 시간

Self-Help

  • 자기계발 서적
  • 계발 목표
  • 잠재력 계발

Hobbies

  • 재능 계발
  • 취미를 통한 계발

Conversation Starters

"어떤 능력을 계발하고 싶으세요?"

"자기계발을 위해 무엇을 하시나요?"

"가장 중요한 계발 분야는 무엇일까요?"

"재능을 계발하는 것이 왜 중요할까요?"

"계발에 도움이 되는 책을 추천해주세요."

Journal Prompts

내가 올해 계발하고 싶은 능력은 무엇인가?

지난달에 새로 계발한 나의 재능은?

자기계발이 나의 삶을 어떻게 바꾸었는가?

내가 가진 잠재력 중 아직 계발하지 않은 것은?

Frequently Asked Questions

8 questions

No, 개발 is for things, 계발 is for people.

Yes, for skill development.

It is neutral but often used in formal contexts.

Yes, 계발했다.

Use '계발하고 있다'.

퇴보하다 (regress).

Yes, especially regarding hobbies.

Yes, it implies effort.

Test Yourself

fill blank A1

나는 나의 재능을 ___.

Correct! Not quite. Correct answer: 계발한다

계발하다 is used for talent.

multiple choice A2

Which is correct?

Correct! Not quite. Correct answer: 능력을 계발하다

계발 is for human skills.

true false B1

계발하다 is the same as building a house.

Correct! Not quite. Correct answer: False

That is 개발하다.

match pairs B1

Word

Meaning

All matched!

Matching concepts.

sentence order B2

Tap words below to build the sentence
Correct! Not quite. Correct answer:

Subject-Object-Verb order.

Score: /5

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