كلف1 كَلِفَ بِهِ He became attached, addicted, given, or devoted, to it; or he attached, addicted, gave, or devoted, himself to it; (S, Msb, K, TA;) he loved it: (Msb, TA:) [he was fond of it:] he loved him, [or it,] vehemently. (TA.) b2: كَلَفٌ, inf. n. of كَلِفَ: [violent or intense love:] see حُبٌّ; and see a verse cited in the first paragraph of that art. 2 كَلَّفَ نَفْسَهُ شَيْئًا He tasked himself with a thing, as also ↓ تَكَلَّفَ شَيئًا. b2:  كَلَّفَهُ أَمْرًا He tasked him to do a thing; imposed upon him the task of doing a thing. b3:  So تَكْلِيفٌ The imposition of a task or duty. b4:  A task; compulsory work; a duty imposed. b5:  كَلَّفَهُ الأَمْرَ He imposed upon him the thing, or affair; syn. حَمَّلَهُ إِيَّاهُ. (Msb.) b6:  كَلَّفَ نَفْسَهُ He put himself to trouble or inconvenience; like ↓ تَكَلَّفَ alone. b7:  كَلَّفَهُ كَذَا He imposed upon him the task of doing, or procuring, or bringing, such a thing. b8:  كَلَّفَهُ أَمْرًا He imposed upon him a thing, or an affair, in spite of difficulty, trouble, or inconvenience: (Msb:) he ordered him to do a thing that was difficult, troublesome, or inconvenient, to him: (S, K:) he made, required, or constrained, him to do a thing; exacted of him the doing a thing; meaning, a thing that was difficult, troublesome, or inconvenient to him: (Kull, 123; and the Lexicons, passim.) See جَتَّمَهُ. b9:  تَكْلِيفٌ An imposition; a requisition: con  straint, &c.5 تَكَلَّفَ أَمْرًا He [undertook a thing, or an affair, as imposed upon him: or] took, or imposed, upon himself, or undertook, a thing, or an affair, [as a task, or] in spite of difficulty, trouble, or inconvenience; (Msb;) syn. تَجَتَّمَهُ: (S, K:) he constrained, or tasked, or exerted, himself, or took pains, or made an effort, to do a thing; meaning, a thing that was difficult, troublesome, or inconvenient, to him: or he affected, as a self-imposed task, the doing of a thing. (The Lexicons, passim: see تغزّل: and see كَلَّفَهُ أَمْرًا.) b2:  تكلّف صِفَةً He affected, or endeavoured to acquire, a quality. So in the explanations of verbs of the measure تَفَعَّلَ; as نَحَلَّمَ. (Sharh El-'Izzee, by Saad-ed-Keen.) b3: Also, He affected, or pretended to have, a quality, not having it. So in the explanations of verbs of the measure تَفَاعَلَ, as تَجَاهَلَ: (idem:) [and sometimes in verbs of the measure تَفَعَّلَ also, as تَكَسَّرَ &c.]. And تَكَلَّفَ alone, He exercised self-constraint, or put himself to trouble or inconvenience. b4:  تَكَلَّفَ He affected what was not natural to him. b5:  تَكَلَّفَ He used forced efforts to do a thing, and to appear to have a quality. He affected, or endeavoured to do or acquire, &c.; he constrained himself to do, &c.; he applied himself, as to a task, to do a thing.تكلّف الشَّجَاعَةَ He made himself, or constrained himself to be, courageous; affected, or endeavoured to acquire, or characterize himself by, courage. b6:  تكلّف الشَّجَاعَةَ also, He acted, or behaved, with forced courage; endeavoured to be courageous. b7:  تكلّف فِى عَرَبِيَّتِهِ He used a forced, or affected, manner in his Arabic speech. b8:  تَكَلُّفٌ A straining of a point in lexicology. b9:  تَعَقَّلَ signifies He affected or endeavoured to acquire, intelligence; explained  by تكلّف العَقْلَ: and تَعَاقَلَ, he pretended to be intelligent, not being really so. (S, art. عقل.) تَكَلُّفٌ in a verb of the measure تَفَعَّلَ is as above explained, signifying a desire for the existence of an attribute in one's self: in a verb of the measure تَفَاعَلَ it is different, and means the pretending to be or to do something which in reality one is not or does not; as in the instance of تَجَاهَلَ, he pretended to be ignorant, not being so in reality. (Sharh El-'Izzee, by Saad-ed-Deen.) تَكَلَّفَ كَذَا He did so purposely. b10:  تَكَلَّفَ He  tasked himself. b11:  تَكَلَّفَ القَىْءَ He vomited intentionally. (TA, art. قىء.) كَلَفٌ [A discolouration of the face, by] a thing that comes upon the face resembling sesame; [by freckles, accord. to present usage:] and a dingy redness that comes upon the face. (S, K.) كُلْفَةٌ A difficulty, or difficult affair, or a duty, or an obligation, that one imposes upon himself; (S, K;) or a thing imposed upon one as difficult, troublesome, or inconvenient. (Msb.) See حَبٌّ. b2:  [Constraint,] trouble, pain, or inconvenience. (MA.)