Core Pattern Rule: Expressing Indecision with -(으)ㄹ까 말까
This pattern is used to express hesitation or indecision about whether to perform an action. It literally translates to "shall I do it, or shall I not?" and perfectly captures the feeling of being on the fence.
Meaning & Usage
Meaning: "whether to... or not," "should I... or shouldn't I?"
When to use: Use it when you are contemplating a choice between doing an action and not doing it. It's often used when thinking out loud or telling someone about your internal debate.
Formation
This pattern attaches directly to a verb stem.
Verb stems ending in a vowel or ㄹ: Add -ㄹ까 말까
가다 (to go) → 갈까 말까
사다 (to buy) → 살까 말까
만들다 (to make) → 만들까 말까
Verb stems ending in a consonant: Add -을까 말까
먹다 (to eat) → 먹을까 말까
입다 (to wear) → 입을까 말까
먹을까 말까 고민 중이야. / 살까 말까 할 땐 사지 마. / 갈까 말까 하다가 안 갔어.
Common Combinations: Verbs of Contemplation
While -(으)ㄹ까 말까 expresses the core hesitation, it's almost always followed by another verb that describes the state of thinking or debating. Learning these common pairings will make your speech sound much more natural.
Common Verbs
고민하다 / 고민 중이다: This is the most common partner, meaning "to contemplate" or "to be in the middle of debating."
회사를 그만둘까 말까 고민 중이야. (I'm debating whether to quit my job.)
하다: Often used in the form -(으)ㄹ까 말까 하다가... to mean "I was debating whether to... and then..." It connects your hesitation to a final decision or outcome.
갈까 말까 하다가 안 갔어요. (I was debating whether to go, but in the end, I didn't.)
망설이다: This means "to hesitate."
누를까 말까 망설였어. (I hesitated whether to press it or not.)
생각 중이다: This means "to be thinking about."
배울까 말까 생각 중이에요. (I'm thinking about whether to learn it or not.)
답장을 할까 말까 고민 중이에요. / 갈까 말까 하다가 안 갔어. / 누를까 말까 망설였어요. / 배울까 말까 생각 중이야.
Synonyms & Differences: -(으)ㄹ까 말까 vs. -(으)ㄹ지 말지
Both -(으)ㄹ까 말까 and -(으)ㄹ지 말지 express indecision, but they have slightly different nuances and grammatical functions.
-(으)ㄹ까 말까
Nuance: Feels more like a direct quote of your internal monologue: "Should I... or shouldn't I?" It emphasizes the personal, ongoing debate.
Usage: It often pairs with verbs of active contemplation like 고민하다 and 망설이다.
Example: 파티에 갈까 말까 고민 중이야. (I'm debating, "Should I go to the party or not?")
-(으)ㄹ지 말지
Nuance: Functions more as a neutral noun clause meaning "whether or not to do (verb)." It's less about the feeling of debate and more about the unresolved state of a decision.
Usage: It can be the object of a wider range of verbs, such as 모르다 (to not know), 결정하다 (to decide), or 알려주다 (to let someone know).
Example: 파티에 갈지 말지 아직 결정 못 했어. (I haven't decided yet whether or not to go to the party.)
In many cases they are interchangeable, but -(으)ㄹ까 말까 has a more colloquial and personal flavor.
이거 살까 말까 고민 중이야. / 이거 살지 말지 아직 모르겠어. / 말할까 말까 망설였어. / 말할지 말지 결정해야 돼.
Politeness & Formality
The pattern -(으)ㄹ까 말까 itself is neutral. The overall politeness of your sentence is determined by the final verb ending.
Casual Language (반말)
When speaking to close friends, family, or people younger than you, use casual endings like -어/아, -이야, or -돼.
고민 중이야 (I'm debating)
안 갔어 (I didn't go)
고민돼 (I'm wondering)
Polite Language (해요체)
When speaking to colleagues, acquaintances, or people older than you, use polite endings like -어요/아요, -이에요, or -돼요.
고민 중이에요 (I'm debating)
안 갔어요 (I didn't go)
고민돼요 (I'm wondering)
고백할까 말까 고민 중이야. / 고백할까 말까 고민 중이에요. / 누를까 말까 망설였어. / 누를까 말까 망설였어요.