महाभारतः mahābhārataḥ - book-3, chapter-271, verse-21

ततः सुतुमुलं युद्धमभवल्लोमहर्षणम् ।
दूषणानुजयोः पार्थ लक्ष्मणस्य च धीमतः ॥२१॥

21. tataḥ sutumulaṁ yuddhamabhavallomaharṣaṇam ,
dūṣaṇānujayoḥ pārtha lakṣmaṇasya ca dhīmataḥ.

21. tataḥ sutumulam yuddham abhavat lomaharṣaṇam
dūṣaṇānujayoḥ pārtha lakṣmaṇasya ca dhīmataḥ

21. Then a very tumultuous and hair-raising battle ensued between Dūṣaṇa's two younger brothers, Pārtha, and the intelligent Lakṣmaṇa.

Words meanings summery:

• ततः (tataḥ) - then (then, therefrom, afterwards)

• सुतुमुलम् (sutumulam) - very tumultuous (very tumultuous, greatly agitated)

• युद्धम् (yuddham) - battle (battle, war, fight)

• अभवत् (abhavat) - it occurred (it was, it occurred, it came into being)

• लोमहर्षणम् (lomaharṣaṇam) - hair-raising (hair-raising, thrilling, causing goosebumps)

• दूषणानुजयोः (dūṣaṇānujayoḥ) - between Dūṣaṇa's younger brothers (of Dūṣaṇa's younger brothers, between Dūṣaṇa's younger brothers)

• पार्थ (pārtha) - Pārtha (a warrior, perhaps another participant) (Pārtha (son of Pṛthā, Arjuna); prince, king's son)

• लक्ष्मणस्य (lakṣmaṇasya) - of Lakṣmaṇa

• च (ca) - and (and, also)

• धीमतः (dhīmataḥ) - of the intelligent one (of the intelligent one, of the wise one)

Words meanings and morphology

ततः (tataḥ) - then (then, therefrom, afterwards)

(indeclinable)

सुतुमुलम् (sutumulam) - very tumultuous (very tumultuous, greatly agitated)

(adjective)

Nominative, neuter, singular of sutumula

sutumula - very tumultuous, extremely agitated, noisy

Prefix su- (very, good) + tumula (tumultuous)

Compound type : karmadhāraya (su+tumula)

• su – good, well, very
  indeclinable
• tumula – tumultuous, noisy, agitated
  adjective (neuter)

Note: Qualifies 'yuddham'.

युद्धम् (yuddham) - battle (battle, war, fight)

(noun)

Nominative, neuter, singular of yuddha

yuddha - battle, war, fight

Past Passive Participle (substantivized)

From root yudh (to fight) with suffix -ta

Root: yudh (class 4)

Note: Subject of 'abhavat'.

अभवत् (abhavat) - it occurred (it was, it occurred, it came into being)

(verb)

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

Imperfect tense

Root bhū, augment a-, 3rd person singular active ending -at

Root: bhū (class 1)

लोमहर्षणम् (lomaharṣaṇam) - hair-raising (hair-raising, thrilling, causing goosebumps)

(adjective)

Nominative, neuter, singular of lomaharṣaṇa

lomaharṣaṇa - causing the hair to stand on end, thrilling, horrifying

Compound of loman (hair) and harṣaṇa (causing excitement/bristling)

Compound type : tatpuruṣa (loman+harṣaṇa)

• loman – hair (of the body)
  noun (neuter)
• harṣaṇa – causing excitement, thrilling, bristling
  adjective (neuter)
  Causative Noun of Action / Verbal Adjective
  From root hṛṣ (to be excited) in causative
  Root: hṛṣ (class 1)

Note: Qualifies 'yuddham'.

दूषणानुजयोः (dūṣaṇānujayoḥ) - between Dūṣaṇa's younger brothers (of Dūṣaṇa's younger brothers, between Dūṣaṇa's younger brothers)

(proper noun)

Genitive, masculine, dual of dūṣaṇānuja

dūṣaṇānuja - younger brother of Dūṣaṇa

Compound type : tatpuruṣa (dūṣaṇa+anuja)

• dūṣaṇa – Dūṣaṇa (name of a rākṣasa); defiling, corrupting
  proper noun (masculine)
• anuja – younger brother
  noun (masculine)
  From anu- + jan (to be born)
  Prefix: anu
  Root: jan (class 4)

Note: Indicates one party of the battle.

पार्थ (pārtha) - Pārtha (a warrior, perhaps another participant) (Pārtha (son of Pṛthā, Arjuna); prince, king's son)

(proper noun)

Nominative, masculine, singular of pārtha

pārtha - son of Pṛthā (Arjuna), prince, king's son, relating to the earth

Formed from Pṛthā with suffix -a (patronymic)

Note: In this Ramayana context, the presence of 'Pārtha' is anomalous, as he is a Mahābhārata character. It is likely a textual variant or a general epithet for a warrior/prince, or referring to another character by this name. Here, it is treated as a proper noun, a participant in the battle, despite the irregular grammatical agreement with other genitive forms specifying the parties.

लक्ष्मणस्य (lakṣmaṇasya) - of Lakṣmaṇa

(proper noun)

Genitive, masculine, singular of lakṣmaṇa

lakṣmaṇa - Lakṣmaṇa (name of Rāma's brother)

Note: Indicates another party of the battle.

च (ca) - and (and, also)

(indeclinable)

Note: Conjunction.

धीमतः (dhīmataḥ) - of the intelligent one (of the intelligent one, of the wise one)

(adjective)

Genitive, masculine, singular of dhīmat

dhīmat - intelligent, wise, thoughtful

Possessive suffix -mat

Note: Qualifies 'lakṣmaṇasya'.