What does -나 보다 mean in Korean? This guide explains how the expression is used to form an inference from the current situation, behavior, sounds, or other contextual clues. Learn how verbs, adjectives, nouns, and past-tense forms connect, why forms such as 맛있나 봐요 and 맛있는가 봐요 can both appear, and how -나 보다 differs from 것 같다, 모양이다, -겠-, and -아/어 보이다. The article also compares Korean -나 보다 with Japanese 〜ようだ and 〜みたいだ through practical everyday examples.