महाभारतः mahābhārataḥ - book-3, chapter-16, verse-18

सुरक्षितं सुगुप्तं च सर्वायुधसमन्वितम् ।
तत्पुरं भरतश्रेष्ठ यथेन्द्रभवनं तथा ॥१८॥

18. surakṣitaṁ suguptaṁ ca sarvāyudhasamanvitam ,
tatpuraṁ bharataśreṣṭha yathendrabhavanaṁ tathā.

18. surakṣitaṃ suguptaṃ ca sarvāyudhasamanvitam
tatpuram bharataśreṣṭha yathā indrabhavanaṃ tathā

18. That city (pura), O best of Bharatas (bharataśreṣṭha), was well-protected, well-concealed, and furnished with all types of weapons, just like the abode of Indra.

Words meanings summery:

• सुरक्षितं (surakṣitaṁ) - well-protected (well-protected, well-guarded, very safe)

• सुगुप्तं (suguptaṁ) - well-concealed (well-hidden, well-concealed, very secret)

• च (ca) - and (and, also, moreover)

• सर्वायुधसमन्वितम् (sarvāyudhasamanvitam) - equipped with all types of weapons (furnished with all weapons, fully armed)

• तत्पुरम् (tatpuram) - that city (that city, that town)

• भरतश्रेष्ठ (bharataśreṣṭha) - O best of Bharatas (vocative, typical address in Mahābhārata) (O best of Bharatas, O chief of Bharatas)

• यथा (yathā) - just like (as, just as, according to)

• इन्द्रभवनं (indrabhavanaṁ) - the abode of Indra (Indra's abode, Indra's palace)

• तथा (tathā) - so, thus (correlating with `yathā`) (so, thus, in that manner, similarly)

Words meanings and morphology

सुरक्षितं (surakṣitaṁ) - well-protected (well-protected, well-guarded, very safe)

(adjective)

Nominative, neuter, singular of surakṣita

surakṣita - well-protected, well-guarded, very safe

Past Passive Participle

From `su-rakṣ` (to protect well)

Prefix: su

Root: rakṣ (class 1)

सुगुप्तं (suguptaṁ) - well-concealed (well-hidden, well-concealed, very secret)

(adjective)

Nominative, neuter, singular of sugupta

sugupta - well-hidden, well-concealed, very secret, carefully kept

Past Passive Participle

From `su-gup` (to protect well, to hide well)

Prefix: su

Root: gup (class 1)

च (ca) - and (and, also, moreover)

(indeclinable)

सर्वायुधसमन्वितम् (sarvāyudhasamanvitam) - equipped with all types of weapons (furnished with all weapons, fully armed)

(adjective)

Nominative, neuter, singular of sarvāyudhasamanvita

sarvāyudhasamanvita - furnished with all weapons, fully armed

Compound

Compound type : bahuvrīhi (sarva+āyudha+samanvita)

• sarva – all, every, whole
  pronoun (masculine)
• āyudha – weapon, implement, tool
  noun (neuter)
• samanvita – accompanied by, furnished with, endowed with, possessed of
  adjective (neuter)
  Past Passive Participle
  From `sam-anu-i` (to go along with)
  Prefixes: sam+anu
  Root: i (class 2)

तत्पुरम् (tatpuram) - that city (that city, that town)

(noun)

Nominative, neuter, singular of tatpura

tatpura - that city, that town

Compound of `tad` (that) + `pura` (city)

Compound type : tatpurusha (tad+pura)

• tad – that, it
  pronoun (neuter)
• pura – city, town, stronghold
  noun (neuter)

भरतश्रेष्ठ (bharataśreṣṭha) - O best of Bharatas (vocative, typical address in Mahābhārata) (O best of Bharatas, O chief of Bharatas)

(proper noun)

Vocative, masculine, singular of bharataśreṣṭha

bharataśreṣṭha - best of Bharatas, chief of the Bharatas

Compound noun

Compound type : tatpurusha (bharata+śreṣṭha)

• bharata – descendant of Bharata, an ancient king; a name for Indians
  proper noun (masculine)
• śreṣṭha – best, most excellent, chief, supreme
  adjective (masculine)
  Superlative of praśasya (excellent)

यथा (yathā) - just like (as, just as, according to)

(indeclinable)

Derived from the pronominal stem `ya`

इन्द्रभवनं (indrabhavanaṁ) - the abode of Indra (Indra's abode, Indra's palace)

(noun)

Nominative, neuter, singular of indrabhavana

indrabhavana - Indra's abode, Indra's palace, heaven

Compound of `indra` (Indra) + `bhavana` (abode)

Compound type : tatpurusha (indra+bhavana)

• indra – Indra (king of gods)
  proper noun (masculine)
• bhavana – abode, dwelling, house, palace, origin
  noun (neuter)
  Action noun
  From root `bhū` (to be, to exist)
  Root: bhū (class 1)

तथा (tathā) - so, thus (correlating with `yathā`) (so, thus, in that manner, similarly)

(indeclinable)