IBLÎS – ابليس
Literally: Satan. Lucifer. The devil. The demon, who works to deviate the human being from the way of Allah.
Some former Mufassirs expounded the word Iblîs as an Arabic word derived from the verbal noun of ابلاس (Ablâs). Ablâs means despairing and losing all hope about receiving any kind of khayr. As a punishment for his disobedience, rebellion and sin Allah (‘Azza wa jalla) made Iblîs a cursed shaytan despaired of all khayr.
(Please refer to The Addendum to the Fifteenth Word)