वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-4, chapter-13, verse-19

तेषामेवं प्रभावेन द्रुमप्राकारसंवृतम् ।
आश्रमं सुदुराधर्षमपि सेन्द्रैः सुरासुरैः ॥१९॥

19. teṣāmevaṃ prabhāvena drumaprākārasaṃvṛtam ,
āśramaṃ sudurādharṣamapi sendraiḥ surāsuraiḥ.

19. teṣām evam prabhāveṇa druma-prākāra-saṃvṛtam
āśramam su-durādharṣam api sa-indraiḥ sura-asuraiḥ

19. teṣām evam prabhāveṇa druma-prākāra-saṃvṛtam
su-durādharṣam āśramam sa-indraiḥ sura-asuraiḥ api

19. Such was their power that their hermitage (āśrama), encircled by a wall of trees, was extremely difficult to assault, even for the gods and demons, including Indra.

Words meanings summery:

• तेषाम् (teṣām) - of those (ascetics) (of them, their)

• एवम् (evam) - such (was their power) (thus, in this manner, such)

• प्रभावेण (prabhāveṇa) - by the power (of their austerities) (by power, by might, by influence)

• द्रुम-प्राकार-संवृतम् (druma-prākāra-saṁvṛtam) - their hermitage (āśrama) surrounded by a natural barrier of trees (surrounded by a wall of trees)

• आश्रमम् (āśramam) - the hermitage (āśrama) of the ascetics (hermitage, ascetic's abode, a stage of life (āśrama))

• सु-दुराधर्षम् (su-durādharṣam) - extremely difficult to attack or overcome (very difficult to attack/assault, impregnable)

• अपि (api) - even (for them) (even, also, too)

• स-इन्द्रैः (sa-indraiḥ) - along with Indra (with Indra, accompanied by Indra)

• सुर-असुरैः (sura-asuraiḥ) - by the celestial beings, both divine and demonic (by gods and demons)

Words meanings and morphology

तेषाम् (teṣām) - of those (ascetics) (of them, their)

(pronoun)

Genitive, masculine, plural of tad

tad - that, those

एवम् (evam) - such (was their power) (thus, in this manner, such)

(indeclinable)

Note: Modifies 'prabhāveṇa'.

प्रभावेण (prabhāveṇa) - by the power (of their austerities) (by power, by might, by influence)

(noun)

Instrumental, masculine, singular of prabhāva

prabhāva - power, might, influence, majesty

Derived from root bhū with prefix pra.

Prefix: pra

Root: bhū (class 1)

Note: Indicates the cause or means.

द्रुम-प्राकार-संवृतम् (druma-prākāra-saṁvṛtam) - their hermitage (āśrama) surrounded by a natural barrier of trees (surrounded by a wall of trees)

(adjective)

Accusative, neuter, singular of druma-prākāra-saṃvṛta

druma-prākāra-saṁvṛta - surrounded by a wall of trees

Compound formed from druma (tree), prākāra (wall), and saṃvṛta (surrounded).

Compound type : bahuvrīhi (druma+prākāra+saṃvṛta)

• druma – tree
  noun (masculine)
• prākāra – wall, fence, enclosure
  noun (masculine)
• saṃvṛta – covered, surrounded, enclosed
  adjective
  Past Passive Participle
  Derived from root vṛ with prefix sam.
  Prefix: sam
  Root: vṛ (class 5)

Note: Agreement with 'āśramam'.

आश्रमम् (āśramam) - the hermitage (āśrama) of the ascetics (hermitage, ascetic's abode, a stage of life (āśrama))

(noun)

Accusative, masculine, singular of āśrama

āśrama - hermitage, monastery, dwelling place of ascetics, a stage of life

Derived from root śram (to toil) with prefix ā.

Prefix: ā

Root: śram (class 4)

Note: Direct object of an implied verb like 'was' or 'existed'.

सु-दुराधर्षम् (su-durādharṣam) - extremely difficult to attack or overcome (very difficult to attack/assault, impregnable)

(adjective)

Accusative, neuter, singular of su-durādharṣa

su-durādharṣa - very difficult to be attacked, impregnable

Gerundive/Future Passive Participle

Compound of su (very), dur (difficult), and ādharṣa (to be attacked).

Compound type : tatpuruṣa (su+dur+ādharṣa)

• su – good, well, very
  indeclinable
• dur – difficult, bad, hard
  indeclinable
• ādharṣa – assault, attack
  noun (masculine)
  Derived from root dhṛṣ (to be bold) with prefix ā.
  Prefix: ā
  Root: dhṛṣ (class 5)

Note: Agreement with 'āśramam'.

अपि (api) - even (for them) (even, also, too)

(indeclinable)

Note: Emphasizes the difficulty.

स-इन्द्रैः (sa-indraiḥ) - along with Indra (with Indra, accompanied by Indra)

(adjective)

Instrumental, masculine, plural of sa-indra

sa-indra - with Indra, accompanied by Indra

Bahuvrīhi compound: sa (with) + indra.

Compound type : bahuvrīhi (sa+indra)

• sa – with, together with
  indeclinable
• indra – Indra (king of gods)
  proper noun (masculine)

Note: Agreement with 'sura-asuraiḥ'.

सुर-असुरैः (sura-asuraiḥ) - by the celestial beings, both divine and demonic (by gods and demons)

(noun)

Instrumental, masculine, plural of sura-asura

sura-asura - gods and demons

Dvandva compound of sura (god) and asura (demon).

Compound type : dvandva (sura+asura)

• sura – god, deity
  noun (masculine)
• asura – demon, evil spirit
  noun (masculine)

Note: Agent of the action 'difficult to assault'.