فتك1 فَتَكَ بِهِ, (S, MA, O, Msb, K,) aor. ـُ and فَتِكَ, inf. n. فَتْكٌ and فُتْكٌ and فِتْكٌ (S, O, Msb, K *) and فُتُوكٌ (MA, K *) and فَتَاكَةٌ, (MA,) He assassinated him; i. e. he came to him when he (the latter) was inadvertent, and assaulted him and slew him; (S, MA, * O;) thus it signifies accord. to an explanation of الفَتْكُ by A' Obeyd; and this is the primary signification: (Az, TA:) if he have not given him [for أَعْطَانَا in my original (an obvious mistranscription) I read أَعْطَاهُ] assurance of safety, it behooves him to make that known to him: (A' Obeyd, TA:) he assaulted him; or he slew him at unawares; and ↓ افتك is a dial. var. thereof: (Msb:) he seized an opportunity that he (another) offered him (K, TA) by his inadvertence, (TA,) and slew him: or he wounded him openly: (K, TA:) or it has a more general meaning with respect to both of these acts: (K, * TA:) Fr says that الفَتْكُ signifies the man's slaying openly. (TA.) It is said in a trad., قَيَّدَ الإِيمَانُ الفَتْكَ لَا يَفْتُِكُ مُؤْمِنٌ [i. e. The giving assurance of safety has inhibited (or, emphatically, inhibits) the slaying at unawares, &c.: one who gives assurance of safety shall not slay at unawares, &c.: the like has been said above: see also an explanation of the former clause of the trad. in art. قيد]. (S, O.) b2:  And فَتَكَ, aor. ـُ and فَتِكَ, inf. n. فَتْكٌ and فُتْكٌ and فِتْكٌ (O, K) and فُتُوكٌ, (K,) He purposed an affair and executed it: (O:) or he embarked in, or performed, an affair that occasioned uneasiness, and to which the mind invited; as also ↓ ا (K:) the latter verb is said by Fr to be a dial. var. of the former. (O.) b3:  [Hence,] فَتَكَ فِى الأَمْرِ, (K, TA,) inf. n. فَتْكٌ, (TA,) (tropical:)  He persisted, or persevered, in the affair; syn. لَجَّ, or أَلَحَّ. (Accord. to different copies of the K; in the TA the former. [The same meaning is also assigned to فَنَكَ.]) b4:  And فَتَكَ فِىالخُبْثِ, [in the CK فى الخُنْبُثِ,] inf. n. فُتُوكٌ, (O, K, TA,) (tropical:)  He exceeded the usual bounds in that which was evil, abominable, foul, or unlawful. (K, TA.) b5:  فَتَكَ فِى صِنَاعَتِهِ (assumed tropical:)  He was skilful in his art, or craft. (TA.) b6:  And فَتَكَتْ said of a girl, or young woman, means (tropical:)  She cared not for what she did nor for what was said to her. (O, K, TA.) [See also فَتَكَتْ.]2 فَتَّكْتُ القُطْنَ, (IDrd, O,) inf. n. تَفْتِيكٌ, (IDrd, O, K,) I separated, plucked asunder, or loosened, the cotton: (IDrd, O, K: *) so in one of the dials.; (IDrd, O;) it is of the dial. of Asd. (TA.) 3 المُفَاتَكَةُ signifies المُمَاهَرَةُ; (O, K, TA;) so says Ibn-' Abbád, (O, TA,) and so Z; (TA;) i. e. (tropical:)  The making a show of skill, one with another: (TK:) [but for المُمَاهَرَةُ, the CK has المُجَاهَرَةُ:] one says, فاتك صَاحِبَهُ i. e. مَاهَرَهُ (tropical:)  [He made a show of skill, app. in competition, with his companion]. (TA.) b2:  And (tropical:)  The falling to the thing (مُوَاقَعَةُ الشَّىْءِ) with vehemence; such as eating, (K, TA,) and drinking, (TA,) and the like. (K, TA.) And فاتك الأَمْرَ (assumed tropical:)  He threw himself, or plunged, into the affair; syn. وَاقَعَهُ: (K, TA:) and the subst. is ↓ فِتَاكٌ [having the meaning of the inf. n.: but why this is not called the inf. n. (for such it is accord. to analogy) I do not see]. (TA.) b3:  And فاتك فُلَانًا (inf. n. مُفَاتَكَةٌ, TA) i. q. دَاوَمَهُ (tropical:)  [app. as meaning (tropical:)  He kept continually, or constantly, to such a one: agreeably  with what here follows]. (O, K, TA.) b4: فاتكت الإِبِلُ الحَمْضَ (assumed tropical:)  The camels [kept continually, or constantly, to the plants called حَمْض, desiring them as food and finding them wholesome: (see the part. n., below:) or] confined themselves to the حمض, not pasturing upon anything therewith. (TA.) And فاتكت الإِبِلُ المَرْعَى (assumed tropical:)  The camels consumed with their mouths [or devoured] the pasture. (TA.) b5:  فاتك فُلَانًا He gave to such a one that which he mentioned as the price of what he had to sell: in the case of his bargaining with him and not giving him anything, one says فاتحهُ. (IAar, O, K.) فاتك التَّاجِرُ فِى البَيْعِ is expl. in the A as meaning The trader exceeded the due bounds, or acted unjustly, in offering the thing for sale and naming the price. (TA.) 4 أَفْتَكَ see 1, in two places.A2:  مَا أَفْتَكَهُ meansHow persistent, or persevering, is he! (TA.) 5 تفتّك بِأَمْرِهِ He executed, or performed, his affair; or kept, or applied himself, constantly, or perseveringly, to it; not consulting any one. (ISh, O, K.) فِتَاكٌ: see 3, former half.فَاتِكٌ [act. part. n. of 1; generally meaning Assassinating; or an assassin:] one who comes upon another suddenly, or at unawares, or takes him by surprise, with some evil, or hateful, act, or [more commonly] with slaughter: and accord. to IDrd, one who, when he purposes a thing, does [it]: (Ham p. 43:) any one who attempts, or ventures upon, great, or formidable, affairs: (Az, TA:) bold, or daring; (S, O, K;) courageous: (K:) pl. فُتَّاكٌ. (S, O, K.) b2:  [Hence,] فَاتِكُ القَلْبِ (assumed tropical:)  Penetrating, sharp, or vigorous, and effective, in mind. (TA.) b3:  And حَيَّةٌ فَاتِكَةٌ لِلسَّبُعِ (tropical:)  [A serpent that attacks the beast of prey]. (TA.) b4:  And جَارِيَةٌ فَاتِكَةٌ (tropical:)  A young woman who cares not for what she does nor for what is said to her. (TA.) تَفْتِيكٌ [app. from the Pers\. تَفْتِيك signifying “ fine, soft, wool,” and “ soft, downy, kids' hair,”] A compress of rags which is put upon a wound in order that the moisture may become absorbed [thereby]: a subst. like تَمْتِينٌ and تَنْبِيتٌ: and post-classical. (TA.) إِبِلٌ مُفَاتِكَةٌ لِلْحَمْضِ Camels that keep continually, or constantly, to the [plants called]حَمْض, desiring them as food and finding them wholesome. (O, TA. [See also 3.])