वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-5, chapter-1, verse-9

प्लवंगप्रवरैर्दृष्टः प्लवने कृतनिश्चयः ।
ववृधे रामवृद्ध्यर्थं समुद्र इव पर्वसु ॥९॥

9. plavaṃgapravarairdṛṣṭaḥ plavane kṛtaniścayaḥ ,
vavṛdhe rāmavṛddhyarthaṃ samudra iva parvasu.

9. plavaṅgapravaraiḥ dṛṣṭaḥ plavane kṛtaniścayaḥ
vavṛdhe rāmavṛddhyartham samudraḥ iva parvasu

9. plavane kṛtaniścayaḥ plavaṅgapravaraiḥ dṛṣṭaḥ,
rāmavṛddhyartham parvasu samudraḥ iva,
vavṛdhe

9. Seen by the best among the monkeys, and having resolved upon the leap, he grew (in size) for the sake of Rāma's success, just as the ocean swells on the days of the new or full moon.

Words meanings summery:

• प्लवङ्गप्रवरैः (plavaṅgapravaraiḥ) - by the foremost of monkeys

• दृष्टः (dṛṣṭaḥ) - seen

• प्लवने (plavane) - in the act of leaping/jumping/flight

• कृतनिश्चयः (kṛtaniścayaḥ) - having made a firm resolve, resolved

• ववृधे (vavṛdhe) - he grew, he increased

• रामवृद्ध्यर्थम् (rāmavṛddhyartham) - for the sake of Rāma's prosperity/success

• समुद्रः (samudraḥ) - ocean, sea

• इव (iva) - like, as, as if

• पर्वसु (parvasu) - on the full moon days, on the new moon days, on festival days, on auspicious times

Words meanings and morphology

प्लवङ्गप्रवरैः (plavaṅgapravaraiḥ) - by the foremost of monkeys

(noun)

Instrumental, masculine, plural of plavaṅgapravara

plavaṅgapravara - chief of monkeys, excellent monkey

Compound type : tatpuruṣa (plavaṅga+pravara)

• plavaṅga – monkey (literally, 'one who leaps by jumping')
  noun (masculine)
• pravara – excellent, chief, foremost
  adjective (masculine)

दृष्टः (dṛṣṭaḥ) - seen

(participle)

Nominative, masculine, singular of dṛṣṭa

dṛṣṭa - seen, observed

Past Passive Participle

Root: dṛś (class 1)

प्लवने (plavane) - in the act of leaping/jumping/flight

(noun)

Locative, neuter, singular of plavana

plavana - leaping, jumping, swimming, flight

Derived from root plu

Root: plu (class 1)

कृतनिश्चयः (kṛtaniścayaḥ) - having made a firm resolve, resolved

(adjective)

Nominative, masculine, singular of kṛtaniścaya

kṛtaniścaya - one who has made a firm resolve, determined

Compound type : bahuvrīhi (kṛta+niścaya)

• kṛta – done, made
  participle (neuter)
  Past Passive Participle
  PPP of kṛ
  Root: kṛ (class 8)
• niścaya – firm resolve, certainty
  noun (masculine)

ववृधे (vavṛdhe) - he grew, he increased

(verb)

3rd person , singular, middle, perfect (lit) of vṛdh

Root: vṛdh (class 1)

रामवृद्ध्यर्थम् (rāmavṛddhyartham) - for the sake of Rāma's prosperity/success

(indeclinable)

Adverbial use of a compound

Compound type : tatpuruṣa (rāma+vṛddhi+artha)

• rāma – Rāma (proper noun)
  proper noun (masculine)
• vṛddhi – growth, prosperity, success
  noun (feminine)
  From root vṛdh
  Root: vṛdh (class 1)
• artha – purpose, sake, meaning
  noun (masculine)

समुद्रः (samudraḥ) - ocean, sea

(noun)

Nominative, masculine, singular of samudra

samudra - ocean, sea

इव (iva) - like, as, as if

(indeclinable)

पर्वसु (parvasu) - on the full moon days, on the new moon days, on festival days, on auspicious times

(noun)

Locative, neuter, plural of parvan

parvan - knot, joint, section, chapter, lunar day (especially full or new moon), festival