1 خَصِمَ خصم , aor. خَصَمَ , [inf. n., app., خَصَمٌ,] He contended in an altercation, disputed, or litigated, in a valid, or sound, manner. (Msb.) ― -b2- See also 3: ― -b3- and 8. 3 خاصمهُ خاصم خاصمه خاصمة , inf. n. مُخَاصَمَةٌ (S, Msb, K) and خِصَامٌ (S, Msb) and [quasi-inf. n.] خُصُومَةٌ, (K,) the last said in the S to be a simple subst., (TA,) He contended with him in an altercation, disputed with him, or litigated with him; (K, TA;) i. q. نَازَعَهُ: (Mgh and Msb and K in art. نزع:) accord. to El-Harállee, الخِصَامُ signifies the saying which the listener is made to hear, and which is made to enter his ear-hole, such as may cause him to refrain, or desist, from his assertion, and his plea, or claim. (TA.) You say, خَاصَمْتُهُ ↓ فَخَصَمْتُهُ , (S, Mgh, Msb, K, *) aor. of the latter أَخْصِمُهُ, with kesr, (S, K, *) or أَخْصُمُهُ, with damm, (Mgh, Msb,) or not with damm, (S,) or both these forms of the aor. are used, accord. to AHei; the latter agreeable with analogy; (MF;) the former anomalous; for the regular aor. of an unaugmented sound verb in a case of this kind is with damm, (S, K,) as in the instance of عَالَمْتُهُ فَعَلَمْتُهُ, aor. أَعْلُمُهُ; (S;) if it has not a faucial letter (S, K) for its medial radical, (K,) in which case it is with fet-h, as in the instance of فَاخَرْتُهُ فَفَخَرْتُهُ, aor. أَفْخَرُهُ, (S, K,) accord. to the opinion of Ks, but this is contr. to the opinion generally held: (MF:) the inf. n. of خَصَمْتُهُ is خَصْمٌ: (S, * TA:) and the meaning is, [I contended with him in an altercation, or I disputed, or litigated, with him, and] I overcame him in the altercation, &c. (Mgh, Msb.) -A2- خاصمهُ also signifies He put it in, or by, the خُصْم, i. e. edge, or side, of the bed. (TA.) 4 اخصمهُ أخصمه اخصمه اخصمة خصم He dictated to him his plea against his adversary in an altercation or a dispute or litigation, (JK, TA,) whereby he might overcome the latter. (JK.) 6 تَخَاْصَمَ see the next paragraph, in two places. 8 اختصموا اختصموا ٱختصم ٱختصموا They contended in altercation, disputed, or litigated, one with another; (Msb, TA;) i. q. ↓ تخاصموا ; (S, K, TA;) both signifying as above. (TA.) He who reads يَخَصِّمُونَ [in the Kur xxxvi. 49] means يَخْتَصِمُونَ; changing the ت into ص, and incorporating [it into the other ص], and transferring its vowel to the خ: some read يَخِصِّمُونَ, without transferring that vowel; (S, K;) because a quiescent letter, when it is made movent, is [regularly] made so with kesr: (S:) AA slurred the vowel of the خ: the pronunciation [يَخْصِّمُونَ] with two quiescent letters together is incorrect: (S, K:) Hamzeh read ↓ يَخْصِمُونَ , (S,) i. e., with the خ quiescent and with kesr to the ص. (TA.) ― -b2- اِخْتَصَمَا إِِلَيْهِ They two applied to him for the decision of a cause, each of them claiming the right. (TA in art. قمط.) And إِِلَيْهِ ↓ تُخُوصِمَ [An application was made to him by litigants for the decision of a cause]. (Mgh in art. دلو.) -A2- السَّيْفُ يَخْتَصِمُ جَفْنَهُ, said by J to signify The sword cuts (lit. eats) its scabbard, by reason of its sharpness, is a mistake; the verb being correctly with ض, (K, * TA,) dotted. (TA.) خَصْمٌ خصم An adversary in contention or altercation, in dispute, or in litigation; an antagonist; a litigant: (JK, K, TA:) as also ↓ خَصِيمٌ : (JK, S, K, TA:) the former is used alike as masc. and fem. (S, Msb, K) and sing. (JK, S, Msb, K) and dual (Msb, K) and pl.; (JK, S, Msb, K;) because it is originally an inf. n.: (S, TA:) [see an ex. of its use in a pl. sense in a verse cited voce جَنَفٌ:] but it also has the dual form, خَصْمَانِ; (S, Msb;) and the pl. خُصُومٌ (JK, S, Msb, K) and خِصَامٌ (Msb) and perhaps أَخْصَامٌ, [which is a pl. of pauc.,] or this may be pl. of خَصِمٌ: (TA:) the pl. of ↓ خَصِيمٌ is خُصَمَآءُ (JK, S, K) and خُصْمَانٌ. (K.) خُصْمٌ خصم The side (S, K) of anything; (S, TA;) as, for instance, of a load such as is called عِدْل; (S;) and of a bed; and the edge thereof: (TA:) written by Aboo-Moosà with ض; but IAth says that it is correctly with ص: (TA in art. خضم:) a lateral part or portion (S, K) of anything: (S:) a corner, (S, K,) as well as a side, (S,) of an عِدْل, and of a receptacle, such as a خُرْج or a جُوَالِق or an عَيْبَة: (S:) and the [anterior lower] extremity of a [water-bag of the kind termed] رَاوِيَة, that is opposite to the عَزْلَآء; (JK, K, TA; [in the CK, الزّاوِيَةِ and الغَزْلاءِ are erroneously put for الرَّاوِيَةِ and العَزْلَآءِ;]) the upper extremity [correctly extremities, at which are the loops whereby it is suspended upon the side of the camel,] being called the عصم [i. e. عُصْم, pl. of عِصَامٌ]: (TA:) pl. [of pauc.] أَخْصَامٌ and [of mult.] خُصُومٌ: (K:) but some say that the أَخْصَام of the [water-bag termed] مَزَادَة, and its خُصُوم, are its corners: the خُصُوم of a cloud are its sides: (TA:) and أَخْصَامُ العَيْنِ signifies the part, or parts, of the eye upon which the edges of the lids close together. (S, K.) ― -b2- [Also A gap, or an intervening space: it is said in the TA that] الأَخْصَامُ [pl. of الخُصْمُ] signifies الفرج [i. e. الفُرَجُ, pl. of الفُرْجَةُ: and it is added,] one says, of an unsound, a corrupt, or a disordered, affair, لَا يُسَّدُ مِنْهُ خُصْمٌ إِِلَّا انْفَتَحَ خُصْمٌ آخَرُ (tropical:) [A gap of it will not be stopped up but another gap will open]; occurring in a trad., meaning, the state of affairs is disordered and distressing, and not to be rectified and repaired. (TA.) ― -b3- [The pl.] خُصُومٌ also signifies The mouths of valleys. (JK, K.) ― -b4- And The lower parts, or stocks, syn. أُصُولٌ, (JK, K,) of [trees of the kind called] سَرَحَات [pl. of سَرْحَةٌ]; used in this sense by Et- Tirimmáh. (JK.) خَصِمٌ خصم Vehement in altercation or dispute or litigation; (S, K, * TA;) as also ↓ خَصُومٌ : (Ham p. 628:) [or each signifies contentious, disputatious, or litigious:] or the former, knowing, or skilled, in altercation &c., though not practising it: (IB, TA:) or valid, or sound, therein; as also ↓ خَصِيمٌ : (Msb:) or this last signifies one who contends with another in an altercation, disputes with him, or litigates with him: (IB, TA:) the pl. of the first is خَصِمُونَ, (K,) occurring in the Kur xliii. 58; and perhaps أَخْصَامٌ, or this may be a pl. of خَصْمٌ. (TA.) خَصْمَةٌ خصم خصمه خصمة A certain bead, or gem, or the like, used by men [as an amulet], in the K, مِنْ حُرُوزِ الرِّجَالِ, but correctly, as in the M, مِنْ خَزَرِ الرِّجَالِ, (TA,) worn on the occasion of contending in an altercation, or disputing, or litigating, or on going into the presence of the Sultán; (K, TA;) and sometimes it is beneath the gem of the man's signetring, when it is small; and it may be in his button; and sometimes they put it in the ذُؤَابَة [or cord by which the hilt is occasionally attached to the guard] of the sword: (TA:) also called خَضْمَةٌ. (K and TA in art. خضم.) خُصْمَةٌ خصم خصمه خصمة and see خُصُومَةٌ. خُصْمَانِيَّةٌ خصمانيه خصمانية : see خُصُومَةٌ. خَصُومٌ خصم خصوم : see خَصِمٌ. خَصِيمٌ خصيم : see خَصْمٌ, in two places; and خَصِمٌ. خُصُومَةٌ خصم خصومه خصومة Contention or altercation; disputation; litigation; (K, TA;) a subst. from 3 (S, TA) or 8 (JK, * TA) and 6, as also ↓ خُصْمَةٌ and ↓ خُصْمَانِيَّةٌ . (TA.) فَصْلُ الخُصُومَةِ: see art. فصل. [See also an ex. voce حُكْمٌ.] أُخْصُومٌ  The loop of the [sack called] جُوَالِق, (JK, TA,) and of the [load called] عِدْل; (TA;) i. q. أُخْسُومٌ; (K;) but the latter is a dial. var. of weak authority, and disapproved. (TA in art. خسم.) Credit: Lane Lexicon