جهلجَهِلَ1 جَهِلَ; (S;) and جَهِلَهُ, (Sh, Msb, K,) and جَهِلَ بِهِ (JK) [and مِنْهُ (see جَاهِلٌ)]; aor. ـَ (K,) inf. n. جَهْلٌ and جَهَالَةٌ (S, Msb, K) and جُهُولِيَّهٌ; (TA;) He was ignorant; (S;) he was characterized by جَهْل in any of the senses assigned to this word below: (TA:) and he was ignorant of it; he did not know it; (Sh, JK, Msb, K;) contr. of عَلِمَهُ. (Msb, K.) You say, مِثْلِى لَا يَجْهَلُ مِثْلَكَ The like of me will not be ignorant of the like of thee. (Sh, TA.) and جَهِلَ عَلَى غَيْرِهِ He acted in an ignorant or a silly or foolish manner towards another: and wrongly. (Msb.) And جَهِلَ فُلَانٌ رَأْيَهُ [i. q. سَفِهَ رَأُيَهُ, He was ignorant, or silly, or foolish, in his opinion, or judgment]. (Sh, TA.) And جَهِلَ الحَقَّ He neglected the truth, or the right, or due; [or he ignored it;] syn. أَضَاعَهُ. (Msb.) See also 6. b2:  جَهِلَتِ القِدْرُ (tropical:)  The cooking-pot boiled vehemently; contr. of تَحَلَّمَت. (TA.) 2 جهّلهُ, (Msb, K,) inf. n. تَجْهِيلٌ, (S, K,) He attributed to him جَهْل [or ignorance, &c.]. (S, Msb, K.) b2:  And He caused him to fall into جَهْل. (TA.) 3 مُجَاهَلَةٌ The acting with levity, and in an ignorant or a silly or foolish manner, with any one. (KL.) [You say, جاهلهُ, meaning He so acted with him.]6 تجاهل He feigned, or made a false show of, جَهْل [or ignorance, &c.]. (S, K.) And ↓ جَهِلَ عَلَيْهِ He feigned ignorance [to him]. (K.) 10 استجهلهُ He reckoned him, or esteemed him, جَاهِل [or ignorant, &c.]. (S, TA.) b2:  He, or it, excited him to lightness, or levity, and unsteadiness. (S, K.) b3:  اِسْتجْهَلَتِ الرِّيحُ الغُصْنَ (tropical:)  The wind put the branch into a state of commotion. (K, TA.) جَهْلٌ an inf. n. of 1: Ignorance; contr. of عِلْمٌ: (S, Msb, * K: *) [and silliness, or foolishness: and wrong conduct: (see 1:)] it is of two kinds; namely, simple, which is the non-existence of knowledge of that which should be known; and compound, which is a decisive belief not agreeable with the fact, or reality: so accord. to Ibn-El-Kemál: or, accord. to Er-Rághib, it is of three kinds; namely, the mind's voidness of knowledge, which is the primary meaning; and the believing a thing to be different from what it is; and the doing a thing in a manner different from that in which it ought to be done: or, accord. to El-Harállee, the proceeding in dubious affairs without knowledge. (TA.) It is said in a prov., كَفِى بِالشَّكِّ جُهْلًا [Doubt is sufficient ignorance]. (Msb.) And it is said in a trad., إِنَّ مِنَ العِلْمِ جَهْلًا [Verily there is, among the kinds of knowledge, what is ignorance]: this is one's  learning what is not requisite, and neglecting what is requisite; or a learned man's affecting, or pretending, a knowledge of that which he does not know. (TA.) جَهِلَأءُ: see الجَاهِلِيَّةُ.:جَهُولٌ see what next follows.جَاهِلٌ and ↓ جَهُولٌ, [but the latter has an intensive signification,] Ignorant: (Msb, K:) and silly, or foolish, in conduct: and wrong in conduct: (Msb:) [characterized by جَهْل in any of the senses assigned to this word above:] pl. جُهَّالٌ (K, KL) and جُهْلٌ and جُهُلٌ and جُهَّلٌ and جُهَلَآءُ: (K:) see جَاهِلِىٌّ. The former epithet is mostly used in dispraise: but sometimes not in dispraise; as in the saying [in the Kur ii. 274], يَجْسِبُهُمُ الجَاهِلُ أَغْنِيَآءَ i. e., The ignorant of their [real] state [would reckon them possessed of competence]. (TA.) هُوَ جَاهِلٌ مِنْهُ means هو جاهل بِهِ, (K, TA,) i. e., He is ignorant [of him, or it, or] of his, or its, state, or condition. (TA.) b2: الجَاهِلُ The lion (K, TA) that is ignorant of the prey. (TA.) [In the CK, وَالجَاهِلُ الاَسَدُ is a mistake for وَالجَاهِلُ الأَسَدُ.]جَيْهَلُ: see جَيْهَلَةٌ.A2:  Also Great as an epithet applied to a smooth rock (صَفَاةٌ). (K.) جَيْهَلَةٌ (IDrd, JK, K) and ↓ جَيْهَلٌ and ↓ مِجْهَلٌ (IDrd, K) and ↓ مِجْهَلَةٌ (K) A piece of wood with which one stirs live, or burning, coals (جَمْر), (JK, K, TA,) or wine (خَمْر); (so in some copies of the K;) of the dial. of El-Yemen. (TA.) جَاهِلِىٌّ [A pagan; a pagan Arab; one of those who are called collectively ↓ الجَاهِليَّةٌ; and sometimes ↓ مُخَضُرَمُون, pl. of شَاهِدٌ: and particularly, a pagan poet;] a poet of the first, or earliest, of the four classes which are ranked in chronological order; of the class which was succeeded next by the مُخَضْرَمُون. (Mz, 49th نوع.) [See also شَاهِدٌ.]الجَاهِلِيَّةٌ: see what next precedes. b2:  [Also, or]↓ الجَاهِلِيَّةُ الجَهْلَآءُ, (JK, S, K,) in which the latter word is a corroborative, (S, K,) as in لَيْلَةٌ لَيْلَآءُ&c., (S,) [The time, or state, of ignorance, or paganism; or of intense ignorance;] the time of the فَتْرَة [or cessation of the mission of apostles, and of the effacement of the signs of their religion]. (JK.) One says, كَانَ ذٰلِكَ فِى الجَاهِلِيَّةِ الجَهْلَآءِ [That was in the time, or state, of paganism, or of intense ignorance]. (S.) مَجْهَلٌ An affair, or an event, or a case, and a land, and a habit, a property, a quality, a practice, or an action, that induces a man to believe a thing to be different from what it is. (Er-Rághib, TA.) A desert (مَفَازَةٌ) in which are no signs of the way. (S.) And أَرْضٌ مَجْهَلٌ A land in which are no signs of the way: (TA:) or in which one will not go aright (K, TA) unless by means of the [signs of the way called] آرَام: (TA:) pl. مَجَاهِلُ, which is the contr. of مَعَالِمُ: (TA:) accord. to the K, it has neither dual nor pl.; but it has both, as 'Iyád and others have affirmed. (MF, TA.) مِجْهَلٌ: see جَيْهَلَةٌ.مَجْهَلَةٌ [A cause of, or an incitement to, ignorant, silly, foolish, or wrong, conduct;] a thing that incites one to الجَهْل. (S, K.) Hence the saying, الوَلَدُ مَجْهَلَةٌ [Children are a cause of silly, or foolish, conduct]. (S.) مِجْهَلَةٌ: see جَيْهَلَةٌ.مِجْهَالٌ (tropical:)  A she-camel light, brisk, or agile, in her pace, or going. (TA.) مَجْهُولٌ [Unknown]. You say, رَكِبْتُ المَفَازَةٌ عَلَى مَجْهُولِهَا [I ventured upon traversing the desert notwithstanding its unknown character]. (S, TA.) b2:  [A man of unknown origin. A book of unknown authorship. b3:  In grammar, The passive voice.] b4:  نَاقَةٌ مَجْهُولَةٌ (tropical:)  A she-camel that has never been milked: or that has no brand upon her: (K, TA:) and (tropical:)  a she-camel that has never conceived. (Z, TA.) مُسْتَجْهِلٌ Making himself like the جَاهِل [or ignorant; feigning himself ignorant]: or reckoning, or esteeming, جَاهِل. (Har p. 572.)