वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-7, chapter-16, verse-9

सुपर्णनागयक्षाणां दैत्यदानवरक्षसाम् ।
प्राणिनामेव सर्वेषामगम्यः पर्वतः कृतः ॥९॥

9. suparṇanāgayakṣāṇāṃ daityadānavarakṣasām ,
prāṇināmeva sarveṣāmagamyaḥ parvataḥ kṛtaḥ.

9. suparṇanāgayakṣāṇām daityadānavarakṣasām
prāṇinām eva sarveṣām agamyaḥ parvataḥ kṛtaḥ

9. parvataḥ suparṇanāgayakṣāṇām daityadānavarakṣasām
prāṇinām eva sarveṣām agamyaḥ kṛtaḥ

9. This mountain has been rendered inaccessible to all beings—even to Suparṇas, Nāgas, Yakṣas, Daityas, Dānavas, and Rākṣasas.

Words meanings summery:

• सुपर्णनागयक्षाणाम् (suparṇanāgayakṣāṇām) - of Suparṇas, Nāgas, and Yakṣas (of Suparṇas (Garudas), Nāgas, and Yakṣas)

• दैत्यदानवरक्षसाम् (daityadānavarakṣasām) - of Daityas, Dānavas, and Rākṣasas

• प्राणिनाम् (prāṇinām) - of living beings (of living beings, of creatures)

• एव (eva) - even (even, only, indeed)

• सर्वेषाम् (sarveṣām) - of all

• अगम्यः (agamyaḥ) - inaccessible (inaccessible, unapproachable, impossible to reach)

• पर्वतः (parvataḥ) - the mountain (mountain, hill)

• कृतः (kṛtaḥ) - has been made / rendered (made, done, created)

Words meanings and morphology

सुपर्णनागयक्षाणाम् (suparṇanāgayakṣāṇām) - of Suparṇas, Nāgas, and Yakṣas (of Suparṇas (Garudas), Nāgas, and Yakṣas)

(noun)

Genitive, masculine, plural of suparṇanāgayakṣa

suparṇanāgayakṣa - Suparṇas, Nāgas, and Yakṣas (collectively)

Compound type : dvandva (suparṇa+nāga+yakṣa)

• suparṇa – having beautiful wings; a class of mythical birds (like Garuḍa)
  noun (masculine)
• nāga – serpent, snake; a class of mythical serpent-beings
  noun (masculine)
• yakṣa – a class of mythical beings, often guardians of treasures
  noun (masculine)

दैत्यदानवरक्षसाम् (daityadānavarakṣasām) - of Daityas, Dānavas, and Rākṣasas

(noun)

Genitive, masculine, plural of daityadānavarakṣas

daityadānavarakṣas - Daityas, Dānavas, and Rākṣasas (collectively)

Compound type : dvandva (daitya+dānava+rakṣas)

• daitya – a class of demons, sons of Diti
  noun (masculine)
• dānava – a class of demons, descendants of Danu
  noun (masculine)
• rakṣas – a demon, rākṣasa
  noun (masculine)

प्राणिनाम् (prāṇinām) - of living beings (of living beings, of creatures)

(noun)

Genitive, masculine, plural of prāṇin

prāṇin - living being, creature, animal

Root: an (class 2)

एव (eva) - even (even, only, indeed)

(indeclinable)

सर्वेषाम् (sarveṣām) - of all

(pronoun)

Genitive, masculine, plural of sarva

sarva - all, every, whole

Note: Agrees with prāṇinām

अगम्यः (agamyaḥ) - inaccessible (inaccessible, unapproachable, impossible to reach)

(adjective)

Nominative, masculine, singular of agamya

agamya - inaccessible, unapproachable, not to be transgressed

gerundive

formed from a (negation) + root gam (to go) + suffix -ya (gerundive)

Compound type : nañ-tatpuruṣa (a+gamya)

• a – not, un-
  indeclinable
  negative prefix
• gamya – approachable, attainable, to be gone to
  adjective (masculine)
  Gerundive
  from root gam (to go)
  Root: gam (class 1)

Note: Agrees with parvataḥ

पर्वतः (parvataḥ) - the mountain (mountain, hill)

(noun)

Nominative, masculine, singular of parvata

parvata - mountain, hill

कृतः (kṛtaḥ) - has been made / rendered (made, done, created)

(adjective)

Nominative, masculine, singular of kṛta

kṛta - made, done, performed, created

Past Passive Participle

from root kṛ (to do, make)

Root: kṛ (class 8)

Note: Agrees with parvataḥ