IBLÎS – ابليس
Literally: Satan. The devil. The primary shaytân among the jinn who rebels against Allah and strives to deviate human beings from as-sirât al-mustaqîm.
Some former Mufassirs expounded the word Iblîs as an Arabic word derived from the verbal noun of ابلاس (iblâs). Iblâs means despairing and losing all hope of receiving any rahmah and khayr. As a punishment for his arrogance, disobedience and rebellion, Allah (‘Azza wa jalla) made Iblîs a cursed shaytan, eternally despaired of all khayr.
(Please refer to The Addendum to the Fifteenth Word)