The Korean grammar pattern ‘-자’ is commonly used to make suggestions or invite someone to do something together, similar to saying “Let’s…” in English.
This guide focuses on how to use -자 naturally in casual Korean conversations when making plans, proposals, or group decisions.
Some learners may already know that ‘-자’ can appear in another usage related to unexpected events.
To avoid confusion, this article covers only the “Let’s” meaning of ‘-자’ (used for suggestions in casual situations); the other ‘-자’ (for unexpected events) is a sentence-middle connective ending.
This article focuses only on using ‘-자’ to say “Let’s” and make suggestions.
Contents
1. What Does ‘-자’ Mean When Making Suggestions?
When used to make suggestions, ‘-자’ expresses an inclusive, casual proposal in Korean, implying that the speaker is also involved in the action, not just telling someone else what to do.
In English, it often corresponds to:
- Let’s…
- Why don’t we…?
- Shall we…? (casual context)
📌 Usage Note
-자’ is a casual, non-polite grammar pattern (반말) used only with friends, classmates, family, or equals. Never use it with teachers, seniors, or in formal situations.
2. How to Form ‘Verb + -자’
Basic Rule: Verb Stem + -자
To form this expression, simply attach ‘-자’ to the verb stem.
Examples:
- 가다 → 가자 (Let’s go)
- 먹다 → 먹자 (Let’s eat)
- 공부하다 → 공부하자 (Let’s study)
No tense markers or honorific endings are added. The form is short, direct, and casual, perfect for everyday conversation.
3. How to Use -자 in Casual Korean Conversations
3-1. Using ‘-자’ to Suggest an Activity
This is the most common use of ‘-자’.
- 영화를 보자.
(Let’s watch a movie.) - 공원에서 산책하자.
(Let’s take a walk in the park.) - 이번 주말에 캠핑 가자.
(Let’s go camping this weekend.) - 하지 말자.
(Let’s not do it.) - 내일 아침 일찍 일어나자.
(Let’s wake up early tomorrow morning.) - 다음 달에 여행 계획을 세우자.
(Let’s make travel plans for next month.) - 오늘 저녁은 한식을 먹자.
(Let’s have Korean food for dinner tonight.)
The speaker is proposing an idea, not giving a command, making the tone friendly and inclusive.
3-2. Using ‘-자’ to Invite Someone to Do Something Together
‘-자’ naturally sounds friendly and cooperative.
- 커피 한잔 마시자.
(Let’s have a cup of coffee.) - 주말에 같이 운동하자.
(Let’s exercise together on the weekend.) - 다음 주에 만나서 이야기하자.
(Let’s meet and talk next week.) - 내일 점심 같이 먹자.
(Let’s have lunch together tomorrow.) - 이번 주말에 영화관에 가자.
(Let’s go to the cinema this weekend.) - 다음 달에 콘서트 보러 가자.
(Let’s go see a concert next month.) - 오늘 저녁에 같이 요리하자.
(Let’s cook together tonight.)
Because the speaker includes themselves, the sentence feels warm rather than forceful, perfect for casual interactions.
3-3. Using ‘-자’ for Group Decisions and Encouragement
‘-자’ is also commonly used when talking to a group.
- 모두 함께 노력하자.
(Let’s all work hard together.) - 환경을 위해 쓰레기를 줄이자.
(Let’s reduce waste for the environment.) - 이번 프로젝트를 성공시키자.
(Let’s make this project successful.) - 서로 도와가며 공부하자.
(Let’s study while helping each other.) - 우리 동네를 깨끗이 만들자.
(Let’s make our neighborhood clean.) - 건강을 위해 매일 운동하자.
(Let’s exercise daily for our health.) - 새해에는 좋은 습관을 만들자.
(Let’s create good habits in the new year.)
This usage is common in meetings, team settings, or motivational speech among equals.
4. Practice Exercises: Use ‘-자’ to Say “Let’s”
Complete the following sentences using the ‘-자’ form:
- 오늘 저녁에 한국 식당에 ______________ (가다)
(Let’s go to a Korean restaurant tonight) - 내일 아침에 일찍 ______________ (일어나다)
(Let’s wake up early tomorrow morning) - 이번 주말에 영화를 ______________ (보다)
(Let’s watch a movie this weekend) - 다음 달에 제주도로 여행을 ______________ (가다)
(Let’s go on a trip to Jeju Island next month) - 한국어를 열심히 (공부하다) ______________
(Let’s study Korean hard) - 새해에는 건강에 더 ______________ (신경 쓰다)
(Let’s pay more attention to our health in the new year) - 오늘 저녁은 피자를 ______________ (시켜 먹다)
(Let’s order pizza for dinner tonight) - 다음 주부터 운동을 ______________ (시작하다)
(Let’s start exercising from next week) - 이번 기회에 새로운 취미를 ______________ (시작해 보다)
(Let’s try starting a new hobby with this opportunity) - 환경을 위해 일회용품 사용을 ______________ (줄이다)
(Let’s reduce the use of disposable items for the environment)
Answers and Self-Check
- 가자
- 일어나자
- 보자
- 가자
- 공부하자
- 신경 쓰자
- 시켜 먹자
- 시작하자
- 시작해 보자
- 줄이자
5. Key Takeaways: Using ‘-자’ for Suggestions
5-1. Common Confusion 1: Thinking ‘-자’ can attach to nouns
Some learners mistakenly believe that ‘-자’ can be added directly to a noun.
Learners may imagine sentences like:
- ❌ 나는 학생자.
This happens because ‘-자’ is misunderstood as a general sentence ending.
However, ‘-자’ always attaches to a verb stem, because it suggests an action, not a state or identity.
Natural examples:
- 공부하자.
- 학교에 가자.
To express identity (“I am a student”), Korean uses copular forms instead:
- 나는 학생이다 / 학생입니다 / 학생이에요.
5-2. Common Confusion 2: Assuming ‘-자’ sounds polite because it means “Let’s”
Although translated as “Let’s,” ‘-자’ is casual and non-polite.
Learners sometimes overlook this in hierarchical situations, such as when speaking to teachers or seniors.
Learners may attempt:
- ❌ 선생님, 이거 하자.
Grammatically, the sentence is correct, but socially inappropriate.
In these contexts, Korean requires polite suggestion forms, such as:
- 선생님, 이거 하시겠어요?
- 선생님, 이거 해 볼까요?
The issue here is social context, not grammar.
5-3. Common Confusion 3: Using ‘-자’ without a verb
Some learners focus on ‘-자’ itself and forget that the action must be stated explicitly.
Learners may attempt:
- ❌ 영화 자.
In Korean, ‘-자’ only completes a sentence when it is attached to a verb.
A natural sentence would be:
- 영화 보자.
6. Mastering ‘-자’ in Korean: Summary and Tips
Quick Summary
When used to make suggestions, ‘-자’ expresses an inclusive action where the speaker and the listener do something together.
It is best translated as “Let’s …” in English.
Key Usage Tips
- ‘-자’ is a casual, non-polite grammar pattern
- Use it only with friends, classmates, family members, or people of similar age or status
- Do not use with teachers, seniors, or in formal situations
- In polite contexts, use ‘-세요’, ‘-시겠어요?’, or ‘-읍시다’ instead
One-Line Reminder
Even though ‘-자’ means “Let’s,”
it does not carry politeness in Korean. Always check the relationship first.
Related Korean Grammar Patterns
Used to make polite suggestions or proposals, suitable for situations requiring some formality, unlike casual ‘-자’.
Expresses respectful suggestions in formal or hierarchical contexts, where ‘-자’ would be inappropriate.
- -(아/어) 보자 (Let’s try…)
Highlights attempting an action together, focusing on trying and seeing the outcome, rather than simply proposing an idea.
Offers a suggestion for another person’s action; differs from ‘-자’, which always includes the speaker in the proposal.
Expresses personal desire rather than a joint action, often confused with ‘-자’ because of similar English translations.
Emphasizes immediate succession of actions, whereas ‘-자’ focuses on narrative sequence or reaction, not strict immediacy.
Describes two simultaneous actions without the sequential or reactionary nuance of ‘-자’, highlighting concurrency instead.