वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-5, chapter-16, verse-4

विबुध्य तु यथाकालं राक्षसेन्द्रः प्रतावपान् ।
स्रस्तमाल्याम्बरधरो वैदेहीमन्वचिन्तयत् ॥४॥

4. vibudhya tu yathākālaṃ rākṣasendraḥ pratāvapān ,
srastamālyāmbaradharo vaidehīmanvacintayat.

4. vibudhya tu yathākālam rākṣasendraḥ pratāpavān
srastamālyāmbaradharaḥ vaidehīm anvacintayat

4. Having awakened at the appropriate time, the valiant king of rākṣasas, whose garlands and clothes were disheveled, began to think about Vaidehī.

Words meanings summery:

• विबुध्य (vibudhya) - having awakened

• तु (tu) - but, indeed, however

• यथाकालम् (yathākālam) - at the proper time, in due course

• राक्षसेन्द्रः (rākṣasendraḥ) - Rāvaṇa as the chief of the rākṣasas (the king of rākṣasas (demons))

• प्रतापवान् (pratāpavān) - valiant, glorious, mighty

• स्रस्तमाल्याम्बरधरः (srastamālyāmbaradharaḥ) - wearing garlands and clothes that were loosened/disheveled

• वैदेहीम् (vaidehīm) - Sītā, daughter of Janaka, king of Videha (Vaidehī (Sītā))

• अन्वचिन्तयत् (anvacintayat) - he thought about, meditated upon

Words meanings and morphology

विबुध्य (vibudhya) - having awakened

(indeclinable)

Prefix: vi

Root: budh (class 1)

Note: Absolutive (gerund) form

तु (tu) - but, indeed, however

(indeclinable)

यथाकालम् (yathākālam) - at the proper time, in due course

(indeclinable)

Compound type : avyayībhāva (yathā+kāla)

• yathā – as, according to, in which way
  indeclinable
• kāla – time, season
  noun (masculine)

राक्षसेन्द्रः (rākṣasendraḥ) - Rāvaṇa as the chief of the rākṣasas (the king of rākṣasas (demons))

(noun)

Nominative, masculine, singular of rākṣasendra

rākṣasendra - chief of demons, king of rākṣasas

Compound type : tatpuruṣa (rākṣasa+indra)

• rākṣasa – demon, evil spirit
  noun (masculine)
• indra – chief, lord, best
  noun (masculine)

प्रतापवान् (pratāpavān) - valiant, glorious, mighty

(adjective)

Nominative, masculine, singular of pratāpavat

pratāpavat - possessing glory, mighty, valiant

Derived from 'pratāpa' (glory, majesty) with suffix '-vat'

Note: Agrees with 'rākṣasendraḥ'

स्रस्तमाल्याम्बरधरः (srastamālyāmbaradharaḥ) - wearing garlands and clothes that were loosened/disheveled

(adjective)

Nominative, masculine, singular of srastamālyāmbaradhara

srastamālyāmbaradhara - one who wears loosened garlands and garments

Compound type : bahuvrīhi (srasta+mālya+ambara+dhara)

• srasta – loosened, fallen, disheveled
  adjective (masculine)
  Past Passive Participle
  Derived from root 'sraṃs' (to fall, loosen)
  Root: sraṃs (class 1)
• mālya – garland, wreath
  noun (neuter)
• ambara – garment, sky
  noun (neuter)
• dhara – wearing, holding, bearing
  adjective (masculine)
  agent noun
  Derived from root 'dhṛ' (to hold, bear)
  Root: dhṛ (class 1)

Note: Agrees with 'rākṣasendraḥ'

वैदेहीम् (vaidehīm) - Sītā, daughter of Janaka, king of Videha (Vaidehī (Sītā))

(proper noun)

Accusative, feminine, singular of vaidehī

vaidehī - a princess of Videha, Sītā

Feminine derivative of 'videha'

अन्वचिन्तयत् (anvacintayat) - he thought about, meditated upon

(verb)

3rd person , singular, active, imperfect (laṅ) of cint

Prefix: anu

Root: cint (class 10)