جزف1 جَزْفٌ [inf. n. of جَزَفَ] signifies The taking a thing [in the manner termed] مَجَازَفَةً and جِزَافًا [i. e. by conjecture, not knowing the measure nor the weight]: (S, TA:) or the taking largely, or copiously: (IF, Msb, TA:) and it is [from] a Persian word. (Msb. [See جُزَافٌ, below.]) and you say, جَزَفَ فِى الكَيْلِ, inf. n. جَزْفٌ, He gave large measure: (IKtt, Msb:) and جَزَفَ لَهُ فِىالكَيْلِ He gave him large measure. (JM, TA.) 3 جازف, (Msb, TA,) inf. n. مُجَازَفَةٌ (S, Msb, K, TA) and جِزَافٌ, (S, TA,) He sold, or bought, a thing not knowing its measure nor its weight: (Msb:) or he conjectured in selling and buying. (K.) b2:  He acted in an easy, or a facile, manner, (Msb, TA,) in selling or buying. (Msb.) b3: And hence, جازف بِنَفْسِهِ (tropical:)  He perilled, endangered, jeoparded, hazarded, or risked, himself; as though he acted in an easy manner with himself. (TA.) 5 تجزّف فِيهِ He picked out, or selected, the good in it; syn. تَنَقَّدَ [in the CK, erroneously, تَنَفَّذَ]. (Sgh, K.) 8 اجترف He bought a thing by conjecture, not knowing the measure nor the weight. (AA, K.) جَزْفٌ Of unknown quantity, whether measured or weighed. (Nh, TA.) جِزْفَةٌ A portion of a number of cattle: (K:) and of hair. (TA) جَزَافٌ: see what next follows, in two places.جُزَافٌ, accord. to the 'Eyn, in selling and buying, is [The selling, and buying,] by conjecture, without measuring and without weighing; and by rule should be ↓ جِزَافٌ, with kesr; i. e., if formed in accordance to the verb [which is جَازَفَ]: (Mgh:) or the selling or buying a thing not knowing its measure nor its weight: (Msb:) or conjecture in selling and buying; as also ↓ جِزَافٌ and ↓ جَزَافٌ and ↓ جُزَافَةٌ and ↓ جِزَافَةٌ and ↓ جَزَافَةٌ: (K, TA:) arabicized, from گُزَافْ, (Msb, K, TA,) which is Persian: (Msb, TA:) they say لَافْ وگَزَافْ, meaning “ excess in speech, by conjecture: ” accord. to the JM, its primary signification is muchness, or copiousness: (TA:) some say that the most chaste form of جزاف is ↓ جِزَافٌ, with kesr; [because this is a regular inf. n. of جَازَفَ;] (MF, TA;) and some, that the triple vocalization of the ج in جزاف is a kind of جزاف [i. e. conjecture], since all assert it to be a Persian word arabicized, and it cannot be so and be also an inf. n., conformable to the verb and to rule: it seems that, when they arabicized it, its original was gradually forgotten, so they formed from it a verb, and derived from it, and made it analogous. (TA.) b2:  بَيْعٌ جُزَافٌ and ↓ جِزَافٌ and ↓ جَزَافٌ and ↓ جَزِيفٌ (K) and ↓ مُجْتَزَفٌ (TA) A thing sold, or bought, of unknown quantity, whether measured or weighed. (TA.) [See also جَزْفٌ.]جِزَافٌ: see جُزَافٌ, in four places.جَزُوفٌ A pregnant female exceeding the term of her bringing forth. (K.) جَزِيفٌ: see جُزَافٌ.جَزَافَةٌ and جُزَافَةٌ and جِزَافَةٌ: see جُزَافٌ.جَزَّافٌ A fisherman. (El-'Azeezee, K.) جَازِفٌ فِى كَلَامِهِ (assumed tropical:)  One who pours forth his speech without rule. (Msb.) مِجْزَفَةٌ A fishing-net. (El-' Azeezee, K.) بَيْعٌ مُجْتَزَفٌ: see جُزَافٌ.