해야겠네

I guess I’ll have to do

→ 하다
해 do; perform + 야 Necessity/condition ending (“must; only if”) + 겠 Future, intention, or conjecture + 네 Realization (sentence-final ending)
verb · informal Rare #20,835
I guess I’ll have to do Conversational; often expresses a realization or decision.
KO: 이제 숙제를 해야겠네.
EN: I guess I’ll have to do my homework now.
Conjugation of 하다

이제 들어가서 술 한 잔 해야겠네,

I guess I’ll go in and have a drink now.

— 씨너스: 죄인들 (2025)

오늘 아침 엔 검둥이 사냥 좀 해야겠네, 얘들아.

Looks like we'll have to do some black dog hunting this morning, guys.

— 씨너스: 죄인들 (2025)

그렇다고 해야겠네

I guess I have to say so.

— 패딩턴 2 (2017)

좋아, 이제 힘든 방법으로 해야겠네.

Okay, looks like I’ll have to do it the hard way now.