The most common Korean word for “eat” is 먹다 (meokda). There is one more word with a similar meaning — compare them below. 「eat」는 한국어로 먹다.
to eat
TOPIK 1 · verb · honorific: 드시다
Words and levels: TOPIK I essentials (National Institute of Korean Language standard curriculum, KOGL Type 1) · examples: Cheesepotato