वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-7, chapter-27, verse-21

अथ युद्धं समभवद्देवराक्षसयोस्तदा ।
घोरं तुमुलनिर्ह्रादं नानाप्रहरणायुधम् ॥२१॥

21. atha yuddhaṃ samabhavaddevarākṣasayostadā ,
ghoraṃ tumulanirhrādaṃ nānāpraharaṇāyudham.

21. atha yuddham samabhavat devarākṣasayoḥ tadā
ghoram tumulanirhrādam nānāpraharanāyudham

21. atha tadā devarākṣasayoḥ ghoram tumulanirhrādam
nānāpraharanāyudham yuddham samabhavat

21. At that point, a terrible battle broke out between the gods and the demons, marked by a tumultuous roar and various types of weaponry.

Words meanings summery:

• अथ (atha) - then, at that point (then, now, thereupon, consequently)

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

• समभवत् (samabhavat) - took place, occurred (occurred, arose, came into being)

• देवराक्षसयोः (devarākṣasayoḥ) - between the gods and the demons (of the gods and demons, between gods and demons)

• तदा (tadā) - at that time, then (then, at that time)

• घोरम् (ghoram) - a terrible, fierce (battle) (terrible, dreadful, fierce)

• तुमुलनिर्ह्रादम् (tumulanirhrādam) - accompanied by a tumultuous roar (having a tumultuous roar/sound)

• नानाप्रहरनायुधम् (nānāpraharanāyudham) - with diverse weapons (having various weapons and arms)

Words meanings and morphology

अथ (atha) - then, at that point (then, now, thereupon, consequently)

(indeclinable)

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

(noun)

Nominative, neuter, singular of yuddha

yuddha - battle, fight, war, fighting

Past Passive Participle (from yudh)

From root `yudh` (to fight).

Root: yudh (class 4)

समभवत् (samabhavat) - took place, occurred (occurred, arose, came into being)

(verb)

3rd person , singular, active, imperfect indicative (laṅ) of sam-bhū

Imperfect Active Indic Third Person Singular

From root `bhū` (1st class) with prefix `sam`.

Prefix: sam

Root: bhū (class 1)

देवराक्षसयोः (devarākṣasayoḥ) - between the gods and the demons (of the gods and demons, between gods and demons)

(noun)

Genitive, masculine, dual of devarākṣasa

devarākṣasa - gods and demons (collectively)

Dvandva compound.

Compound type : dvandva (deva+rākṣasa)

• deva – god, deity
  noun (masculine)
  Root: div (class 4)
• rākṣasa – demon, rākṣasa
  noun (masculine)
  Root: rakṣ (class 1)

तदा (tadā) - at that time, then (then, at that time)

(indeclinable)

Avyaya (indeclinable), from 'tad' (that).

घोरम् (ghoram) - a terrible, fierce (battle) (terrible, dreadful, fierce)

(adjective)

Nominative, neuter, singular of ghora

ghora - terrible, dreadful, frightful, fierce

Root: ghur (class 1)

तुमुलनिर्ह्रादम् (tumulanirhrādam) - accompanied by a tumultuous roar (having a tumultuous roar/sound)

(adjective)

Nominative, neuter, singular of tumulanirhrāda

tumulanirhrāda - tumultuous roar, dreadful sound

Bahuvrīhi compound, describing the battle.

Compound type : bahuvrīhi (tumula+nirhrāda)

• tumula – tumultuous, noisy, boisterous, agitated
  adjective (neuter)
  Root: tul (class 10)
• nirhrāda – roar, sound, noise
  noun (masculine)
  From root `hrād` (to roar, sound) with prefix `nir`.
  Prefix: nir
  Root: hrād (class 1)

नानाप्रहरनायुधम् (nānāpraharanāyudham) - with diverse weapons (having various weapons and arms)

(adjective)

Nominative, neuter, singular of nānāpraharanāyudha

nānāpraharanāyudha - having various weapons and arms

Bahuvrīhi compound.

Compound type : bahuvrīhi (nānā+praharana+āyudha)

• nānā – various, diverse, manifold
  indeclinable
• praharana – striking, weapon, missile
  noun (neuter)
  From root `hṛ` with prefix `pra`.
  Prefix: pra
  Root: hṛ (class 1)
• āyudha – weapon, implement, tool
  noun (neuter)
  From root `yudh` with prefix `ā`.
  Prefix: ā
  Root: yudh (class 4)