Core Pattern Rule: Asking "Shall we...?" or "I wonder..."
The pattern -을까(요)? is a versatile question ending that serves two primary functions: making a suggestion or expressing wonder/asking for an opinion.
Formation
This pattern attaches directly to verb stems.
Vowel or ㄹ ending stem + -ㄹ까(요)?
가다 (to go) → 갈까(요)?
만들다 (to make) → 만들까(요)?
Consonant ending stem + -을까(요)?
먹다 (to eat) → 먹을까(요)?
있다 (to exist) → 있을까(요)?
Two Main Meanings
Suggestion: When the subject is 'we' (우리), it means "Shall we...?" or "How about we...?"
e.g., 우리 만날까? (Shall we meet?)
Wondering/Asking Opinion: When the subject is 'I' or a third person/thing, it expresses doubt, curiosity, or asks for the listener's thoughts. It translates to "I wonder if..." or "Do you think...?"
e.g., 비가 올까? (I wonder if it will rain? / Do you think it will rain?)
우리 만날까? / 비가 올까? / 내가 할 수 있을까? / 커피 마실까요?
Expressing Indecision: -을까 말까
A very common and fixed expression using this pattern is [Verb]-을까 말까?. This structure is used to show that you are hesitating and can't decide whether to perform an action.
Meaning & Structure
Structure: [Verb stem]-을까 + 말다 (to not do) + -ㄹ까?
Literal Meaning: "Shall I do it, or shall I not do it?"
Usage: It perfectly captures the feeling of being on the fence about something. You can use it to talk to yourself or to ask someone else for their opinion on your dilemma.
Examples
This form is used repeatedly in the script, showing how frequently it appears in daily life.
살까 말까? (Should I buy it or not?)
갈까 말까? (Should I go or not?)
말할까 말까? (Should I say it or not?)
먹을까 말까? / 전화할까요 말까요? / 보낼까 말까? / 버릴까요 말까요?