격세지감이 · 격세지감을
the feeling that times have changed completely
Example
스마트폰으로 모든 일을 하는 걸 보면 격세지감을 느껴요.
Seeing everything done by smartphone, I feel how much times have changed.
Word parts
격 separate+세 generation+지 of+감 feeling
Literally 'feeling of being a generation apart'.
Good to know
Almost always used with 느끼다: 격세지감을 느끼다.
Related words