Entries on كأب in 10 Arabic dictionaries by the authors Zayn al-Dīn al-Razī, Mukhtār al-Ṣiḥāḥ, Muḥammad al-Fattinī, Majmaʿ Biḥār al-Anwār fī Gharāʾib al-Tanzīl wa Laṭāʾif al-Akhbār, Al-Ṣāḥib bin ʿAbbād, Al-Muḥīṭ fī l-Lugha, and 7 more
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كأب: كاءَبَ: أكأب، أحزن (فوك).