वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-4, chapter-54, verse-21

बभूव संनादितनिर्झरान्तरो
भृशं नदद्भिर्जलदैरिवोल्बणैः ॥२१॥

21. babhūva saṃnāditanirjharāntaro
bhṛśaṃ nadadbhirjaladairivolbaṇaiḥ.

21. babhūva saṃnāditanirjharāntaraḥ bhṛśam
nadadbhiḥ jaladaiḥ iva ulbaṇaiḥ

21. saṃnāditanirjharāntaraḥ bhṛśam babhūva
nadadbhiḥ ulbaṇaiḥ jaladaiḥ iva

21. Its interior, resounding with the sound of waterfalls, became exceedingly loud, as if from the fierce roaring of mighty clouds.

Words meanings summery:

• बभूव (babhūva) - became, was

• संनादितनिर्झरान्तरः (saṁnāditanirjharāntaraḥ) - describing the interior of the (implied) mountain (whose interior is resonant with waterfalls)

• भृशम् (bhṛśam) - exceedingly, greatly, much

• नदद्भिः (nadadbhiḥ) - by roaring, by sounding

• जलदैः (jaladaiḥ) - by clouds

• इव (iva) - like, as if

• उल्बणैः (ulbaṇaiḥ) - by fierce, by mighty, by loud

Words meanings and morphology

बभूव (babhūva) - became, was

(verb)

3rd person , singular, active, perfect (Lit) of bhū

Root: bhū (class 1)

संनादितनिर्झरान्तरः (saṁnāditanirjharāntaraḥ) - describing the interior of the (implied) mountain (whose interior is resonant with waterfalls)

(adjective)

Nominative, masculine, singular of saṃnāditanirjharāntara

saṁnāditanirjharāntara - whose interior is made to resound by waterfalls

Bahuvrīhi compound

Compound type : bahuvrīhi (saṃnādita+nirjhara+antara)

• saṃnādita – resounded, made to sound
  adjective (masculine)
  Past Passive Participle
  from root nad (1P) 'to sound' with prefix sam
  Prefix: sam
  Root: nad (class 1)
• nirjhara – waterfall, cascade
  noun (masculine)
• antara – interior, inside, middle
  noun (neuter)

भृशम् (bhṛśam) - exceedingly, greatly, much

(indeclinable)

नदद्भिः (nadadbhiḥ) - by roaring, by sounding

(adjective)

Instrumental, masculine, plural of nadat

nadat - roaring, sounding (present participle)

Present Active Participle

from root nad (1P) 'to sound'

Root: nad (class 1)

Note: Qualifies jaladaiḥ

जलदैः (jaladaiḥ) - by clouds

(noun)

Instrumental, masculine, plural of jalada

jalada - cloud (giver of water)

Tatpuruṣa compound: jala (water) + da (giver, from root dā)

Compound type : tatpuruṣa (jala+da)

• jala – water
  noun (neuter)
• da – giver, bestower
  noun (masculine)
  from root dā (to give)
  Root: dā (class 3)

इव (iva) - like, as if

(indeclinable)

उल्बणैः (ulbaṇaiḥ) - by fierce, by mighty, by loud

(adjective)

Instrumental, masculine, plural of ulbaṇa

ulbaṇa - fierce, mighty, violent, loud, prominent

Note: Qualifies jaladaiḥ