महाभारतः mahābhārataḥ - book-7, chapter-138, verse-2

अनुमानेन संज्ञाभिर्युद्धं तद्ववृते महत् ।
नरनागाश्वमथनं परमं लोमहर्षणम् ॥२॥

2. anumānena saṁjñābhiryuddhaṁ tadvavṛte mahat ,
naranāgāśvamathanaṁ paramaṁ lomaharṣaṇam.

2. anumānena saṃjñābhiḥ yuddham tat vavṛte mahat
naranāgāśvamathanam paramam lomaharṣaṇam

2. tat mahat yuddham anumānena saṃjñābhiḥ (eva) vavṛte
(tat) naranāgāśvamathanam paramam lomaharṣaṇam (āsa)

2. That great battle, which involved the crushing of men, elephants, and horses, and was supremely terrifying, continued by means of conjecture and signals.

Words meanings summery:

• अनुमानेन (anumānena) - by means of conjecture (by inference, by conjecture, by guess)

• संज्ञाभिः (saṁjñābhiḥ) - by means of signals (by signals, by signs, by designations)

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

• तत् (tat) - that (referring to the battle mentioned) (that)

• ववृते (vavṛte) - continued (continued, occurred, happened)

• महत् (mahat) - great (great, large, important)

• नरनागाश्वमथनम् (naranāgāśvamathanam) - involving the slaughter of men, elephants, and horses (the crushing of men, elephants, and horses)

• परमम् (paramam) - supremely, extremely (supreme, highest, excellent, extremely)

• लोमहर्षणम् (lomaharṣaṇam) - supremely terrifying (causing hair to stand on end, terrifying)

Words meanings and morphology

अनुमानेन (anumānena) - by means of conjecture (by inference, by conjecture, by guess)

(noun)

Instrumental, neuter, singular of anumāna

anumāna - inference, conjecture, presumption

Root: mā (class 2)

संज्ञाभिः (saṁjñābhiḥ) - by means of signals (by signals, by signs, by designations)

(noun)

Instrumental, feminine, plural of saṃjñā

saṁjñā - signal, sign, designation, understanding

Prefix: saṃ

Root: jñā (class 9)

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

(noun)

Nominative, neuter, singular of yuddha

yuddha - battle, fight, war

Root: yudh (class 4)

Note: Subject of vavṛte.

तत् (tat) - that (referring to the battle mentioned) (that)

(pronoun)

Nominative, neuter, singular of tad

tad - that, this

Note: Agrees with yuddham.

ववृते (vavṛte) - continued (continued, occurred, happened)

(verb)

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

perfect middle

Reduplicated perfect middle form of √vṛt.

Root: vṛt (class 1)

महत् (mahat) - great (great, large, important)

(adjective)

Nominative, neuter, singular of mahat

mahat - great, large, mighty, important

Note: Agrees with yuddham.

नरनागाश्वमथनम् (naranāgāśvamathanam) - involving the slaughter of men, elephants, and horses (the crushing of men, elephants, and horses)

(noun)

Nominative, neuter, singular of naranāgāśvamathana

naranāgāśvamathana - crushing/slaughter of men, elephants, and horses

Compound noun, derived from mathana (crushing) preceded by a dvandva compound of nara, nāga, aśva.

Compound type : dvandva-tatpuruṣa (nara+nāga+aśva+mathana)

• nara – man, human
  noun (masculine)
• nāga – snake, serpent; elephant
  noun (masculine)
• aśva – horse
  noun (masculine)
• mathana – crushing, churning, destroying
  noun (neuter)
  Action noun from √math (to churn, crush).
  Root: math (class 1)

Note: Adjective to yuddham.

परमम् (paramam) - supremely, extremely (supreme, highest, excellent, extremely)

(adjective)

Nominative, neuter, singular of parama

parama - highest, supreme, ultimate, excellent

लोमहर्षणम् (lomaharṣaṇam) - supremely terrifying (causing hair to stand on end, terrifying)

(adjective)

Nominative, neuter, singular of lomaharṣaṇa

lomaharṣaṇa - causing hair to stand on end, horripilating, terrifying

Compound: loman (hair) + harṣaṇa (causing to stand erect, thrilling).

Compound type : tatpuruṣa (loman+harṣaṇa)

• loman – hair (of the body)
  noun (neuter)
• harṣaṇa – causing to stand erect, thrilling, exciting
  adjective (neuter)
  causative agent noun/adjective
  Derived from causative of root √hṛṣ (to be excited, stand erect).
  Root: hṛṣ (class 1)