A1adjective
سَيِّئ
sayyiʾ
bad
Example
الطَّقسُ سَيِّئ اليَوم
aṭ-ṭaqsu sayyiʾ al-yawm
The weather is bad today
Grammar
Feminine form: sayyiʾa (سَيِّئة). Opposite of jayyid (جَيِّد).
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Arabic root
س-و-ا
2 words from this root family
A2noun
سَيِّئَةٌ
sayyiʾah
bad deed / sin / evil
Example
وَمَنْ جَاءَ بِالسَّيِّئَةِ فَلَا يُجْزَى إِلَّا مِثْلَهَا
wa-man jāʾa bis-sayyiʾati falā yujzā illā mithlahā
And whoever comes with an evil deed will not be recompensed except its equivalent (6:160)
Grammar
Feminine adjective used as noun. From the root س-و-أ (to be bad). Plural: سَيِّئَاتٌ. Paired with حَسَنَة in many verses.
Culture
God's justice: bad deeds are only counted once (1:1 ratio), while good deeds are multiplied — a Quranic expression of divine mercy exceeding justice.