ع ت بʿ-t-b
(ن، ض) عَتَبَ يَعْتُبُ وَيَعْتِبُ عَتْبًاʿataba yaʿtubu wa-yaʿtibu ʿatban: to be displeased with; to reproach.
Form IV (ifʿāl) اَعْتَبَ يُعْتِبُ اِعْتَابًاaʿtaba yuʿtibu iʿtāban: to remove the cause of displeasure; to make someone content.
مُعْتَبٌmuʿtab (passive participle, ism mafʿūl): one who has been made content. ﴿فَمَا هُمْ مِّنَ الْمُعْتَبِيْنَ﴾ (Fuṣṣilat 41:24)
Form X (istifʿāl) اِسْتَعْتَبَ يَسْتَعْتِبُ اِسْتِعْتَابًاistaʿtaba yastaʿtibu istiʿtāban: to seek someone's good pleasure; to conciliate someone. ﴿وَاِنْ يَّسْتَعْتِبُوْا﴾ (Fuṣṣilat 41:24); ﴿وَلَا هُمْ يُسْتَعْتَبُوْنَ﴾ (Ar-Rūm 30:57)