महाभारतः mahābhārataḥ - book-7, chapter-139, verse-32

पाण्डुपाञ्चालसेनानां कौरवाणां च मारिष ।
आसीन्निष्टानको घोरो निघ्नतामितरेतरम् ॥३२॥

32. pāṇḍupāñcālasenānāṁ kauravāṇāṁ ca māriṣa ,
āsīnniṣṭānako ghoro nighnatāmitaretaram.

32. pāṇḍu-pāñcāla-senānām kauravāṇām ca māriṣa
āsīt niṣṭānakaḥ ghoraḥ nighnatām itaretaram

32. māriṣa pāṇḍu-pāñcāla-senānām kauravāṇām ca
itaretaram nighnatām ghoraḥ niṣṭānakaḥ āsīt

32. O venerable one (māriṣa), a terrible roar arose from the armies of the Pāṇḍavas and Pañcālas, and the Kauravas, as they killed one another.

Words meanings summery:

• पाण्डु-पाञ्चाल-सेनानाम् (pāṇḍu-pāñcāla-senānām) - of the combined forces of the Pāṇḍavas and Pañcālas (of the armies of the Pāṇḍus and Pañcālas)

• कौरवाणाम् (kauravāṇām) - of the Kaurava warriors/army (of the Kauravas, of the descendants of Kuru)

• च (ca) - and (and, also)

• मारिष (māriṣa) - O venerable one (addressed to Dhṛtarāṣṭra by Sañjaya) (O venerable one, O respectable one)

• आसीत् (āsīt) - there was (there was, it was)

• निष्टानकः (niṣṭānakaḥ) - a terrible roar (roar, loud sound, clashing noise)

• घोरः (ghoraḥ) - terrible (terrible, dreadful, fierce)

• निघ्नताम् (nighnatām) - of those killing (each other) (of those striking/killing)

• इतरेतरम् (itaretaram) - each other (mutually, one another, each other)

Words meanings and morphology

पाण्डु-पाञ्चाल-सेनानाम् (pāṇḍu-pāñcāla-senānām) - of the combined forces of the Pāṇḍavas and Pañcālas (of the armies of the Pāṇḍus and Pañcālas)

(noun)

Genitive, feminine, plural of pāṇḍu-pāñcāla-senā

pāṇḍu-pāñcāla-senā - army of Pāṇḍu and Pañcāla

Compound type : ṣaṣṭhī-tatpuruṣa (pāṇḍu-pāñcāla+senā)

• pāṇḍu-pāñcāla – Pāṇḍavas and Pañcālas
  noun (masculine)
• senā – army, host, military force
  noun (feminine)

Note: A compound referring to the armies of both Pāṇḍavas and Pañcālas.

कौरवाणाम् (kauravāṇām) - of the Kaurava warriors/army (of the Kauravas, of the descendants of Kuru)

(noun)

Genitive, masculine, plural of kaurava

kaurava - descendant of Kuru; belonging to the Kurus

Derived from Kuru, referring to the descendants of the Kuru dynasty.

च (ca) - and (and, also)

(indeclinable)

मारिष (māriṣa) - O venerable one (addressed to Dhṛtarāṣṭra by Sañjaya) (O venerable one, O respectable one)

(noun)

Vocative, masculine, singular of māriṣa

māriṣa - venerable, respectable, worshipful; a gentleman

Note: Common vocative used in address.

आसीत् (āsīt) - there was (there was, it was)

(verb)

3rd person , singular, active, imperfect past (laṅ) of as

Root: as (class 2)

Note: Forms 'āsīt' (was).

निष्टानकः (niṣṭānakaḥ) - a terrible roar (roar, loud sound, clashing noise)

(noun)

Nominative, masculine, singular of niṣṭānaka

niṣṭānaka - roaring, loud sound, clashing noise

Root: stan (class 1)

घोरः (ghoraḥ) - terrible (terrible, dreadful, fierce)

(adjective)

Nominative, masculine, singular of ghora

ghora - terrible, dreadful, fierce, frightful

Note: Agrees with 'niṣṭānakaḥ'.

निघ्नताम् (nighnatām) - of those killing (each other) (of those striking/killing)

(participle)

Genitive, masculine, plural of nighnat

nighnat - striking, killing

Present Active Participle

Present active participle of root 'han' (to strike, kill) with prefix 'ni'.

Prefix: ni

Root: han (class 2)

Note: Refers to the warriors of both sides.

इतरेतरम् (itaretaram) - each other (mutually, one another, each other)

(indeclinable)

Note: Accusative singular neuter of itaretara, used adverbially.