탈상이 · 탈상을
end of the mourning period
Example
요즘은 사십구재를 마치고 탈상하는 경우가 많아요.
These days, many families end mourning after the forty-ninth-day rite.
Word parts
탈 take off+상 mourning
Literally 'taking off mourning' — once meant removing mourning clothes after three years.