B1noun
فَاحِشَةٌ
fāḥishah
indecency / immorality / grave sin
Example
وَلَا تَقْرَبُوا الْفَوَاحِشَ مَا ظَهَرَ مِنْهَا وَمَا بَطَنَ
wa-lā taqrabū al-fawāḥisha mā ẓahara minhā wa-mā baṭan
And do not approach immoralities, what is apparent of them and what is concealed (6:151)
Grammar
Feminine noun. Plural: فَوَاحِشُ (fawāḥish), a broken plural. Active participle form used as a noun.
Culture
The Quran prohibits not just committing indecency but even approaching it — a principle of preventive morality in Islamic law.