법률이나 관습적으로 혼인이 금지된 가족 또는 가까운 친척 사이의 성관계.
Sexual activity between family members or close relatives who are legally or socially prohibited from marrying.
예문:
"The psychological trauma resulting from incest can last a lifetime."
"In many ancient royal families, incest was practiced to keep the bloodline pure."
"The legal system treats incest as a serious crime due to the breach of familial trust."