महाभारतः mahābhārataḥ - book-7, chapter-66, verse-42

ततः प्रववृते युद्धं तुमुलं लोमहर्षणम् ।
अन्योन्यं वै प्रार्थयतां योधानामर्जुनस्य च ॥४२॥

42. tataḥ pravavṛte yuddhaṁ tumulaṁ lomaharṣaṇam ,
anyonyaṁ vai prārthayatāṁ yodhānāmarjunasya ca.

42. tataḥ pravavṛte yuddhaṃ tumulaṃ lomaharṣaṇam
anyonyaṃ vai prārthayatāṃ yodhānām arjunasya ca

42. tataḥ tumulaṃ lomaharṣaṇam yuddhaṃ pravavṛte,
anyonyaṃ prārthayatāṃ yodhānām arjunasya ca vai

42. Then a tumultuous, hair-raising battle commenced between the warriors and Arjuna, who were fiercely challenging each other.

Words meanings summery:

• ततः (tataḥ) - then, thereupon, from that

• प्रववृते (pravavṛte) - commenced, began, ensued

• युद्धं (yuddhaṁ) - battle, fight, war

• तुमुलं (tumulaṁ) - tumultuous, terrible, fierce

• लोमहर्षणम् (lomaharṣaṇam) - hair-raising, dreadful, thrilling

• अन्योन्यं (anyonyaṁ) - mutually, each other

• वै (vai) - indeed, surely, verily

• प्रार्थयतां (prārthayatāṁ) - desiring, challenging, seeking

• योधानाम् (yodhānām) - of the warriors

• अर्जुनस्य (arjunasya) - of Arjuna

• च (ca) - and

Words meanings and morphology

ततः (tataḥ) - then, thereupon, from that

(indeclinable)

from pronominal base 'tad' with ablative suffix -tas used adverbially

प्रववृते (pravavṛte) - commenced, began, ensued

(verb)

3rd person , singular, middle, perfect (liṭ) of pravṛt

perfect (liṭ) middle voice

third person singular, perfect, middle voice of vṛt with prefix pra-

Prefix: pra

Root: vṛt (class 1)

युद्धं (yuddhaṁ) - battle, fight, war

(noun)

Nominative, neuter, singular of yuddha

yuddha - battle, fight, war

from root yudh (to fight)

Root: yudh (class 4)

तुमुलं (tumulaṁ) - tumultuous, terrible, fierce

(adjective)

Nominative, neuter, singular of tumula

tumula - noisy, tumultuous, turbulent, dreadful

लोमहर्षणम् (lomaharṣaṇam) - hair-raising, dreadful, thrilling

(adjective)

Nominative, neuter, singular of lomaharṣaṇa

lomaharṣaṇa - hair-raising, causing horripilation, dreadful

compound of loman (hair) and harṣaṇa (causing thrill/erection)

Compound type : tatpurusha (loman+harṣaṇa)

• loman – hair, fur
  noun (neuter)
• harṣaṇa – causing joy, exciting, causing erection
  noun (neuter)
  causative noun
  from root hṛṣ (to be thrilled) + ṇic + ana
  Root: hṛṣ (class 1)

अन्योन्यं (anyonyaṁ) - mutually, each other

(pronoun)

Accusative, neuter, singular of anyonya

anyonya - one another, mutual

compound of anya and anya

Note: used adverbially here

वै (vai) - indeed, surely, verily

(indeclinable)

प्रार्थयतां (prārthayatāṁ) - desiring, challenging, seeking

(participle)

Genitive, masculine, plural of prārthayat

prārthayat - desiring, requesting, challenging

present active participle

from prārthayati (root arth, desiderative, with pra-ā- prefixes)

Prefixes: pra+ā

Root: arth (class 10)

योधानाम् (yodhānām) - of the warriors

(noun)

Genitive, masculine, plural of yodha

yodha - warrior, soldier

from root yudh (to fight)

Root: yudh (class 4)

अर्जुनस्य (arjunasya) - of Arjuna

(proper noun)

Genitive, masculine, singular of arjuna

arjuna - Arjuna (name of a Pandava prince)

च (ca) - and

(indeclinable)