• vidūrathaḥ — Vidūratha (Dantavakra's brother)
  Vidūra (far) + ratha (chariot). 'He whose chariot is far' — and indeed he abandons the chariot entirely and charges on foot, as his brother did. The name encodes his fate.
• bhrātṛ-śoka — grief for his brother
  Bhrātṛ (brother) + śoka (grief). The same compound is later used of Yudhiṣṭhira and of Bharata. Śoka is a recognized human bhāva — the Bhāgavatam grants the demon real grief, not a caricature.
• pariplutaḥ — overwhelmed / flooded
  Pari- (around) + plu (flood). Vidūratha is submerged in śoka. Gauḍīyas note: only one being is worth being parikrama-plutaḥ — the Lord. The demon is flooded by the wrong tide.
• ucchvasan — breathing heavily
  Present participle of ud-√śvas. The breath of rage and grief. Devotees' breath in viraha is the same physiology with the opposite object — the Bhāgavatam keeps the bodily fact, changes only the target.
• jighāṁsayā — with intent to kill
  Instrumental of jighāṁsā, desiderative of √han. Same root that drives Dantavakra in verse 5. Both brothers approach the Lord through the verb of killing — and through it, are killed into life.

Vidūratha runs at Kṛṣṇa breathing hard, sword in one hand, shield in the other, brother-grief spilling out of him. The asura grieves his brother more truthfully than most men grieve theirs — the only flaw is the address. He brings real sorrow to the wrong tribunal.