ذهل1 ذَهَلَ عَنْهُ, (JK, S, Msb, K,) aor. ـَ (S, K,) inf. n. ذَهْلٌ, (JK, S,) or ذُهُولٌ, (Msb,) or both; (K;) and ذَهِلَ, (S, Msb,) aor. ـَ (Msb,) inf. n. ذُهُولٌ; (S;) He forgot it, or neglected it; (S;) he was, or became, unmindful of it; (S, Msb:) or he neglected it intentionally; (JK, T, M, K, * TA; عَلَى عَهْدٍ in the K being a mistake for على عَمْدٍ, as in the [JK and T and] M; TA;) or in consequence of his being diverted by something: (T, K:) or he forgot it, or dismissed it from his mind, intentionally, and became diverted from it: (Z, Msb:) ذُهُولٌ is the neglecting a thing, dismissing it from the mind: (Ham p. 31:) or the quitting a thing, with confusion, or perplexity, or alienation of mind, such as arises from fear &c.: (Ksh and Bd in xxii. 2:) or the being diverted from one's constant companion, or familiar, so as to forget him; and being content to relinquish him: (K;) or diversion that occasions grief and forgetfulness. (Er-Rághib, TA.) Hence, in the Kur [xxii. 2], يَوْمَ تَرَوْنَهَا تَذْهَلُ كُلُّ مُرْضِعَةٍ عَمَّاأَرْضَعَتٌ [On the when thou shalt see it, every woman giving suck shall forget, or neglect, &c., what she has suckled]. (TA.) A2:  See also what next follows.4 أَذْهَلَنِى عَنْهُ, (JK, * S, Msb, TA,) inf. n. إِذْهَالٌ, (TA,) It (a thing, JK, S, TA,) or he, (a man, Msb,) caused me to forget it, or neglect it; (S;) or to be unmindful of it; (S, Msb;) or to neglect it intentionally: (JK:) [like أَذَهَنَنِى عنه:] and sometimes one says ↓ ذَهَلَنِى; (Msb, TA;) [like ذَهَنَنى;] but this is rare; or, rather, unknown. (TA.) ذَهْلٌ: see what next follows.جَآءَ بَعْدَ ذُهْلٍ مِنَ اللَّيْلِ, (S, K, *) and ↓ ذَهْلٍ, (S, K,) He came after a short portion, or a period, (سَاعَة, K, or هَدْء, S,) of the night: (S, K:) so called because sleep causes men to forget (يُذْهِلُ النَّاسَ) therein: (Ham p. 4:) or a large portion; such as the third, or the half: so says IDrd; but he doubts its correctness; and ISd holds it to be preferably with د. (TA.) A2:  ذُهْلٌ also signifies The tree [or plant] بَشَام [q. v.]. (JK, Sgh, K.) ذُهْلُولٌ A horse fleet, or swift: (K:) or light, or active: and so a man: pl. ذَهَالِيلُ. (JK.) ذَاهِلٌ [act. part. n. of 1. b2:  And] A man who cares not for ornament and the anointing of himself. (JK.)