رثى1 رَثَيْتُ المَيِّتَ, (S, M, Msb, K,) aor. ـْ (Msb,) inf. n. مَرْثِيَةٌ (S, M, Msb, K) and مَرْثَاةٌ and رِثَايَةٌ and رِثَآءٌ and رَثْىٌ; (M, K;) and رَثَوْتُهُ; (S, M in art. رثو, * and K;) I wept for, or over, [or bewailed,] the dead man, and [eulogized him, or] enumerated his good qualities or actions; (S, K;) as also ↓ رَثَّيْتُيهُ, inf. n. تَرْثِيَةٌ; and ↓ تَرَثَّيْتُهُ: (K:) and also I composed verses on the dead man; (S, K;) [composed an elegy, a dirge, or an epicedium, on him;] eulogized him in verse: (TA:) or I eulogized the dead man, and wept for him or over him; as also ↓ رَثَّيْتُهُ: (M:) or, accord. to Lth, رَثَى فُلَانًا, aor. ـْ inf. n. رَثْىٌ and مَرْثِيَةٌ, signifies he wept for, or over, such a one after his death; and ↓ رثّاهُ, inf. n. ترْثِيَةٌ, he eulogized him after his death: (T:) or رَثَيْتُ المَيِّتَ and لَهُ ↓ تَرَثَّيْتُ signify I felt, or expressed, pity, or compassion, for the dead man. (Msb. [See also رَثَى لَهُ, in what follows.]) You say also, رَثَتِ المَرْأَةُ زَوْجَهَا, (IAar, T,) or بَعْلَهَا, (M,) aor. ـْ (IAar, T, M) and تَرْثُوهُ, (IAar, T, and M in art. رثو,) inf. n. رِثَايَةٌ [&c.]; (T;) and رَثِيَتْهُ, aor. ـْ inf. n. رثَايَةٌ [&c.]; (Lh, M;) and ↓ تَرَثَّتْهُ; (M;) [The woman wept for, or over, her husband, &c, he being dead:] and ISk mentions an Arab woman's saying رَثَأْتُ زَوْجِى بِأَبْيَاتٍ; pronouncing the verb with ء (S. [See 1 (last sentence) in art. رثأ.]) And you say, رَثَى لَهُ He was, or became, tender, pitiful, or compassionate, towards him. (S, M, K.) And مَا يَرْثِى فُلَانٌ لِى Such a one does not lament, complain, or express pain or grief, for me; nor does he care for me: and إِنِّى لَا أَرْثِى لَهُ [Verily I do not lament, &c.,  for him], inf. n. مَرْثَاةٌ and رَثْىٌ. (T.) b2:  رَثَيْتُ عَنْهُ حَدِيثًا, (AA, Lh, T, S, M, K,) aor. ـْ inf. n. رِثَايَةٌ, (AA, T, S, K,) I mentioned a story, or tradition, received from him: (AA, T, S, K:) and (K) I retained in my memory a story, or tradition, received from him: (Lh, M, K:) but the phrase that is well known is نَثَيْتُ عَنْهُ خَبَرًا, meaning “ I bore information, or tidings, from him: ” (M:) and رَثَوْتُ عَنْهُ حَدِيثًا also has the second of these meanings; (M and K * in art. رثو;) or the first of them: (K in that art.:) but the phrase that is well known is نَثَوْتُ عَنْهُ خَبَرًا: (M in that art.:) accord. to E-'Okeylee, you say, رَثَوْنَا بَيْنَنَا حَدِيثًا and رَثَيْنَاهُ [i. e. We mentioned among us a story, or tradition]; and تَنَاثَيْنَاهُ means the like thereof. (T.) A2:  رَثِىَ, (IAar, M, K, [and accord. to the TA, رُثِىَ, but it appears from the context that this is taken from a copy of the M, and is wrong,]) inf. n. رَثْىٌ, by rule رَثًى, (IAar, M,) He was, or became, affected with what is termed رَثْيَةٌ, (IAar, M, K,) in all the senses of this word. (K.) A3:  [A meaning assigned to رَثَا by Golius belongs to رَثَأَ, q. v.]2 رَثَّىَ see 1, in three places.5 تَرَثَّىَ see 1, in three places.8 ارتثى. The meanings assigned to this verb by Golius belong to ارتثأ, q. v.]رَثْيَةٌ A pain in the knees and [other] joints: (S:) or a pain in the joints, and in the arms and legs, or hands and feet, or fore and hind legs: (M, K:) or a swelling, (M, K,) and a [malady such as is termed] ظُلَاع, (M,) in the legs of a beast: (M, K:) or anything that prevents a person from rising and going away, or going quickly, occasioned by old age or pain: (M, K, * TA: الاِلْتِفَات in the K is a mistake for الاِنْبِعَاث: TA:) pl. رَثَيَاتٌ. (S.) b2:  Also, and ↓ رَثِيَّةٌ, Weakness. (Th, M, K. [او ضَعْفٍ in the CK is a mistake for وَالضَّعْفُ.]) b3:  And Foolishness, or stupidity. (Th, M, K.) And you say, فِى أَمْرِهِ رَثْيَةٌ In his affair is a flagging, or remissness, or languor. (M.) رَثِيَّةٌ: see the next preceding paragraph.رَثَّآءَةٌ and ↓ رَثَّايَةٌ, epithets applied to a woman, (T, S, K,) Who wails much (T, * K, TA) for her husband: or who weeps much for, or over, another, of those whom she holds in honour. (TA.) رَثَّايَةٌ: see what next precedes.أَرْثَى A man who does not perform an affair firmly, soundly, or thoroughly, (M, K, TA,) by reason of his weakness. (TA.) مَرْثَاةٌ (M, K) and ↓ مَرْثِيَةٌ (S, M, Msb, K) [see 1: used as simple substs., A lamentation for one dead; an elegy; a dirge; an epicedium: pl. مِرَاثٍ].مَرْثِيَةٌ: see what next precedes.