What does 몽롱하다 mean?
I saw it on a variety show where they were giving foot massages and they said the feeling was 몽롱하다??

Question

Answer

몽롱하다 means "dim; indistinct; vague; fuzzy; obscure; hazy; cloudy; misty; unclear"
It often means "feel drowsy"

For example,
약에 취해 몽롱하다
I feel drowsy with my medication.

마약에 중독된 그 남자는 몽롱한 상태였다.
The drug addicted man was blown out.