잡수세요 · 잡수셨어요 · 잡수실 거예요
to eat (very honorific, for elders)
Example
할아버지, 진지 잡수셨어요?
Grandpa, have you had your meal?
Word parts
잡수다 (itself an honorific of 먹다) + honorific -시-; the contracted 잡숫다 is also standard.
Good to know
Pronounced [잡쑤시다]: the final ㅂ makes the next ㅅ tense. Use it for grandparents and the elderly; more deferential than 드시다.