महाभारतः mahābhārataḥ - book-7, chapter-73, verse-18

निर्मलानामजिह्मानां नाराचानां विशां पते ।
निर्मुक्ताशीविषाभानां संपातोऽभूत्सुदारुणः ॥१८॥

18. nirmalānāmajihmānāṁ nārācānāṁ viśāṁ pate ,
nirmuktāśīviṣābhānāṁ saṁpāto'bhūtsudāruṇaḥ.

18. nirmalānām ajihmānām nārācānām viśām pate
nirmuktāśīviṣābhānām sampātaḥ abhūt sudāruṇaḥ

18. viśām pate nirmalānām ajihmānām nirmuktāśīviṣābhānām
nārācānām sudāruṇaḥ sampātaḥ abhūt

18. O lord of the people, a very terrible clash occurred with straight, pure iron arrows, which resembled unleashed venomous serpents.

Words meanings summery:

• निर्मलानाम् (nirmalānām) - of the pure, of the spotless

• अजिह्मानाम् (ajihmānām) - of the straight, of the not crooked

• नाराचानाम् (nārācānām) - of the iron arrows

• विशाम् (viśām) - of the people, of the subjects

• पते (pate) - O lord, O master

• निर्मुक्ताशीविषाभानाम् (nirmuktāśīviṣābhānām) - of those resembling unleashed venomous serpents

• सम्पातः (sampātaḥ) - clash, encounter, shower (of arrows), falling together

• अभूत् (abhūt) - occurred, happened, was

• सुदारुणः (sudāruṇaḥ) - very terrible, exceedingly fierce

Words meanings and morphology

निर्मलानाम् (nirmalānām) - of the pure, of the spotless

(adjective)

Genitive, plural of nirmala

nirmala - pure, spotless, clean, unsullied

Compound type : pradi-samāsa (nir+mala)

• nir – without, free from, out
  indeclinable
• mala – dirt, impurity, stain
  noun (masculine)

Note: Agrees with nārācānām

अजिह्मानाम् (ajihmānām) - of the straight, of the not crooked

(adjective)

Genitive, plural of ajihma

ajihma - not crooked, straight, honest, sincere

Compound type : nañ-tatpuruṣa (a+jihma)

• a – not, non
  indeclinable
• jihma – crooked, bent, oblique, dishonest
  adjective

Note: Agrees with nārācānām

नाराचानाम् (nārācānām) - of the iron arrows

(noun)

Genitive, masculine, plural of nārāca

nārāca - iron arrow, a particular kind of arrow

विशाम् (viśām) - of the people, of the subjects

(noun)

Genitive, feminine, plural of viś

viś - people, community, subjects, a member of the third social class (Vaiśya)

पते (pate) - O lord, O master

(noun)

Vocative, masculine, singular of pati

pati - lord, master, husband, ruler

निर्मुक्ताशीविषाभानाम् (nirmuktāśīviṣābhānām) - of those resembling unleashed venomous serpents

(adjective)

Genitive, plural of nirmuktāśīviṣābha

nirmuktāśīviṣābha - resembling an unleashed poisonous snake

Compound type : bahuvrīhi (nirmukta+āśīviṣa+ābha)

• nirmukta – released, freed, unleashed, discharged
  participle
  Past Passive Participle
  From root muc (to release) with prefix nir-
  Prefix: nir
  Root: muc (class 6)
• āśīviṣa – venomous snake, a serpent whose venom is in its fangs
  noun (masculine)
• ābha – resembling, like, having the appearance of
  adjective
  Suffix -ābha indicating resemblance

Note: Agrees with nārācānām

सम्पातः (sampātaḥ) - clash, encounter, shower (of arrows), falling together

(noun)

Nominative, masculine, singular of sampāta

sampāta - falling together, conjunction, clash, encounter, shower (of arrows)

Prefix: sam

Root: pat (class 1)

अभूत् (abhūt) - occurred, happened, was

(verb)

3rd person , singular, active, aorist (luṅ) of bhū

Root: bhū (class 1)

सुदारुणः (sudāruṇaḥ) - very terrible, exceedingly fierce

(adjective)

Nominative, masculine, singular of sudāruṇa

sudāruṇa - very terrible, exceedingly fierce, extremely dreadful

Compound type : pradi-samāsa (su+dāruṇa)

• su – good, well, very, exceedingly
  indeclinable
• dāruṇa – terrible, dreadful, harsh, cruel
  adjective

Note: Agrees with sampātaḥ