먹었나 보네

looks like [someone] ate

→ 먹다
phrase Rare #25,368
looks like [someone] ate 먹었나 보네 expresses a guess based on what the speaker observes. 먹다 can also mean “to be scared” in the phrase 겁을 먹다.
KO: 벌써 점심 먹었나 보네.
EN: Looks like you already ate lunch.