سَيِّئ
Appears 2 times in the Quran.
(Root: سوا)
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9:102 وَءَاخَرُونَ ٱعْتَرَفُوا۟ بِذُنُوبِهِمْ خَلَطُوا۟ عَمَلًا صَٰلِحًا وَءَاخَرَ سَيِّئًا عَسَى ٱللَّهُ أَن يَتُوبَ عَلَيْهِمْ إِنَّ ٱللَّهَ غَفُورٌ رَّحِيمٌ
And others have confessed their faults, they have mingled a good deed and an evil one; may be Allah will turn to them (mercifully); surely Allah is Forgiving, Merciful.
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35:43 ٱسْتِكْبَارًا فِى ٱلْأَرْضِ وَمَكْرَ ٱلسَّيِّئِ وَلَا يَحِيقُ ٱلْمَكْرُ ٱلسَّيِّئُ إِلَّا بِأَهْلِهِۦ فَهَلْ يَنظُرُونَ إِلَّا سُنَّتَ ٱلْأَوَّلِينَ فَلَن تَجِدَ لِسُنَّتِ ٱللَّهِ تَبْدِيلًا وَلَن تَجِدَ لِسُنَّتِ ٱللَّهِ تَحْوِيلًا
(In) behaving proudly in the land and in planning evil; and the evil plans shall not beset any save the authors of it. Then should they wait for aught except the way of the former people? For you shall not find any alteration in the course of Allah; and you shall not find any change in the course of Allah.