महाभारतः mahābhārataḥ - book-7, chapter-3, verse-5

शतक्रतोरिवाचिन्त्यं पुरा वृत्रेण निर्जयम् ।
मोहनं सर्वसैन्यस्य युधि भीष्मस्य पातनम् ॥५॥

5. śatakratorivācintyaṁ purā vṛtreṇa nirjayam ,
mohanaṁ sarvasainyasya yudhi bhīṣmasya pātanam.

5. śatakratoḥ iva acintyam purā vṛtreṇa nirjayam
mohanam sarvasainyasya yudhi bhīṣmasya pātanam

5. yudhi bhīṣmasya pātanam purā vṛtreṇa śatakratoḥ
nirjayam iva acintyam sarvasainyasya mohanam

5. The felling of Bhishma in battle was as inconceivable as the former defeat of Indra (śatakratu) by Vṛtra, causing bewilderment to the entire army.

Words meanings summery:

• शतक्रतोः (śatakratoḥ) - of Indra (śatakratu) (of Indra, of the one with a hundred sacrifices)

• इव (iva) - as (like, as, as if)

• अचिन्त्यम् (acintyam) - inconceivable (inconceivable, unimaginable, unthinkable)

• पुरा (purā) - formerly (formerly, in ancient times, in the past)

• वृत्रेण (vṛtreṇa) - by Vṛtra (by Vṛtra (a demon))

• निर्जयम् (nirjayam) - defeat (of Indra by Vṛtra) (defeat, conquest, victory)

• मोहनम् (mohanam) - bewilderment (bewildering, deluding; bewilderment, delusion)

• सर्वसैन्यस्य (sarvasainyasya) - of the entire army (of the entire army, of all armies)

• युधि (yudhi) - in battle (in battle, in war)

• भीष्मस्य (bhīṣmasya) - of Bhishma

• पातनम् (pātanam) - the felling (the act of felling, causing to fall; falling)

Words meanings and morphology

शतक्रतोः (śatakratoḥ) - of Indra (śatakratu) (of Indra, of the one with a hundred sacrifices)

(proper noun)

Genitive, masculine, singular of śatakratu

śatakratu - one who has performed a hundred sacrifices; an epithet of Indra

Compound type : bahuvrihi (śata+kratu)

• śata – hundred
  numeral (neuter)
• kratu – sacrifice, ritual act, power, strength
  noun (masculine)
  Root: kṛ (class 8)

इव (iva) - as (like, as, as if)

(indeclinable)

अचिन्त्यम् (acintyam) - inconceivable (inconceivable, unimaginable, unthinkable)

(adjective)

Accusative, neuter, singular of acintya

acintya - inconceivable, unthinkable, incomprehensible

Gerundive

Derived from root 'cint' (to think) with negative prefix 'a'.

Compound type : bahuvrihi (a+cintya)

• a – not, non-, un-
  indeclinable
• cintya – to be thought, conceivable
  adjective (neuter)
  Gerundive
  Derived from root 'cint' (to think).
  Root: cint (class 10)

Note: Agrees with 'nirjayam' and 'pātanam'.

पुरा (purā) - formerly (formerly, in ancient times, in the past)

(indeclinable)

वृत्रेण (vṛtreṇa) - by Vṛtra (by Vṛtra (a demon))

(proper noun)

Instrumental, masculine, singular of vṛtra

vṛtra - name of a demon, personification of drought and obstruction, slain by Indra

निर्जयम् (nirjayam) - defeat (of Indra by Vṛtra) (defeat, conquest, victory)

(noun)

Accusative, masculine, singular of nirjaya

nirjaya - conquest, victory; defeat (when referring to the conquered)

Prefix: nir

Root: ji (class 1)

Note: Here, it refers to the defeat suffered by Indra (śatakratu) at the hands of Vṛtra, an unimaginable event.

मोहनम् (mohanam) - bewilderment (bewildering, deluding; bewilderment, delusion)

(noun)

Accusative, neuter, singular of mohana

mohana - causing delusion or confusion; bewildering, fascinating; bewilderment, infatuation

Derived from root 'muh' (to be confused, bewildered).

Root: muh (class 4)

Note: Refers to the effect of Bhishma's fall on the army.

सर्वसैन्यस्य (sarvasainyasya) - of the entire army (of the entire army, of all armies)

(noun)

Genitive, neuter, singular of sarvasainya

sarvasainya - the entire army

Compound type : karmadhāraya (sarva+sainya)

• sarva – all, every, entire
  pronoun
• sainya – army, host, military force
  noun (neuter)

युधि (yudhi) - in battle (in battle, in war)

(noun)

Locative, feminine, singular of yudh

yudh - battle, fight, war

Root: yudh (class 4)

भीष्मस्य (bhīṣmasya) - of Bhishma

(proper noun)

Genitive, masculine, singular of bhīṣma

bhīṣma - terrible, formidable; name of a prominent character in the Mahābhārata, son of Shantanu

पातनम् (pātanam) - the felling (the act of felling, causing to fall; falling)

(noun)

Accusative, neuter, singular of pātana

pātana - felling, throwing down, causing to fall; falling, descending

Verbal noun

Derived from the causative stem of root 'pat' (to fall).

Root: pat (class 1)