महाभारतः mahābhārataḥ - book-9, chapter-1, verse-9

ततः सुतुमुलं युद्धं कुरुपाण्डवसेनयोः ।
बभूव भरतश्रेष्ठ देवासुररणोपमम् ॥९॥

9. tataḥ sutumulaṁ yuddhaṁ kurupāṇḍavasenayoḥ ,
babhūva bharataśreṣṭha devāsuraraṇopamam.

9. tataḥ sutumulam yuddham kurupāṇḍavasenayoḥ
babhūva bharataśreṣṭha devāsuraraṇopamam

9. bharataśreṣṭha tataḥ kurupāṇḍavasenayoḥ
sutumulam devāsuraraṇopamam yuddham babhūva

9. Then, O best among the Bharatas, a very tumultuous battle ensued between the armies of the Kurus and Pandavas, resembling the war between the devas and asuras.

Words meanings summery:

• ततः (tataḥ) - then, thereafter, from that, therefore

• सुतुमुलम् (sutumulam) - very tumultuous, extremely fierce, exceedingly violent

• युद्धम् (yuddham) - battle, war, fight

• कुरुपाण्डवसेनयोः (kurupāṇḍavasenayoḥ) - of the armies of the Kurus and Pandavas

• बभूव (babhūva) - became, happened, occurred

• भरतश्रेष्ठ (bharataśreṣṭha) - O best among Bharatas, O chief of the Bharatas

• देवासुररणोपमम् (devāsuraraṇopamam) - resembling the battle between devas and asuras, like the war of gods and demons

Words meanings and morphology

ततः (tataḥ) - then, thereafter, from that, therefore

(indeclinable)

सुतुमुलम् (sutumulam) - very tumultuous, extremely fierce, exceedingly violent

(adjective)

Nominative, neuter, singular of sutumula

sutumula - very tumultuous, extremely fierce, very noisy

Compound type : karmadhāraya (su+tumula)

• su – good, well, excellent, very
  indeclinable
• tumula – tumultuous, noisy, confused, turbulent
  adjective (masculine)

युद्धम् (yuddham) - battle, war, fight

(noun)

Nominative, neuter, singular of yuddha

yuddha - battle, war, fight, combat

From root yudh- (to fight)

Root: yudh (class 4)

कुरुपाण्डवसेनयोः (kurupāṇḍavasenayoḥ) - of the armies of the Kurus and Pandavas

(noun)

Genitive, feminine, dual of kurupāṇḍavasenā

kurupāṇḍavasenā - the army of the Kurus and Pandavas

Compound type : dvandva-tatpuruṣa (kuru+pāṇḍava+senā)

• kuru – a descendant of Kuru, a member of the Kuru dynasty
  proper noun (masculine)
• pāṇḍava – a descendant of Pāṇḍu, son of Pāṇḍu
  proper noun (masculine)
• senā – army, host, troop
  noun (feminine)

बभूव (babhūva) - became, happened, occurred

(verb)

3rd person , singular, active, perfect (liṭ) of bhū

perfect tense, 3rd person singular

Root: bhū (class 1)

भरतश्रेष्ठ (bharataśreṣṭha) - O best among Bharatas, O chief of the Bharatas

(noun)

Vocative, masculine, singular of bharataśreṣṭha

bharataśreṣṭha - best among the Bharatas

Compound type : tatpuruṣa (bharata+śreṣṭha)

• bharata – a descendant of Bharata, a king, an inhabitant of Bhārata
  proper noun (masculine)
• śreṣṭha – best, excellent, chief, pre-eminent
  adjective (masculine)

देवासुररणोपमम् (devāsuraraṇopamam) - resembling the battle between devas and asuras, like the war of gods and demons

(adjective)

Nominative, neuter, singular of devāsuraraṇopama

devāsuraraṇopama - similar to the battle of gods and demons

Compound type : karmadhāraya (deva+asura+raṇa+upama)

• deva – god, deity, divine being
  noun (masculine)
• asura – demon, anti-god
  noun (masculine)
• raṇa – battle, war, conflict
  noun (masculine)
• upama – comparison, simile, resemblance, equal
  adjective (masculine)