महाभारतः mahābhārataḥ - book-6, chapter-62, verse-16

एतदक्षरमव्यक्तमेतत्तच्छाश्वतं महत् ।
एतत्पुरुषसंज्ञं वै गीयते ज्ञायते न च ॥१६॥

16. etadakṣaramavyaktametattacchāśvataṁ mahat ,
etatpuruṣasaṁjñaṁ vai gīyate jñāyate na ca.

16. etat akṣaram avyaktam etat tat śāśvatam mahat
etat puruṣa-saṃjñam vai gīyate jñāyate na ca

16. etat akṣaram avyaktam,
etat tat śāśvatam mahat,
etat vai puruṣa-saṃjñam gīyate ca na jñāyate.

16. This is the imperishable, the unmanifest; this is that eternal and great (reality). This, indeed, is known as the cosmic person (puruṣa); it is declared but not truly known.

Words meanings summery:

• एतत् (etat) - this

• अक्षरम् (akṣaram) - imperishable, immutable, syllable

• अव्यक्तम् (avyaktam) - unmanifest, unexpressed, unperceived

• एतत् (etat) - this

• तत् (tat) - that

• शाश्वतम् (śāśvatam) - eternal, perpetual, everlasting

• महत् (mahat) - great, vast, supreme, mighty

• एतत् (etat) - this

• पुरुष-संज्ञम् (puruṣa-saṁjñam) - named puruṣa, known as the cosmic person (puruṣa)

• वै (vai) - indeed, certainly, verily

• गीयते (gīyate) - is sung, is praised, is declared

• ज्ञायते (jñāyate) - is known, is understood

• न (na) - not, no

• च (ca) - and, also, but

Words meanings and morphology

एतत् (etat) - this

(pronoun)

Nominative, neuter, singular of etad

etad - this

अक्षरम् (akṣaram) - imperishable, immutable, syllable

(noun)

Nominative, neuter, singular of akṣara

akṣara - imperishable, immutable, indestructible; a syllable

अव्यक्तम् (avyaktam) - unmanifest, unexpressed, unperceived

(adjective)

Nominative, neuter, singular of avyakta

avyakta - unmanifest, unexpressed, imperceptible

Past Passive Participle

Derived from root añj (to anoint, manifest) with prefix vi- (apart) and negation a-

Prefixes: a+vi

Root: añj (class 7)

एतत् (etat) - this

(pronoun)

Nominative, neuter, singular of etad

etad - this

तत् (tat) - that

(pronoun)

Nominative, neuter, singular of tad

tad - that, he, she, it

शाश्वतम् (śāśvatam) - eternal, perpetual, everlasting

(adjective)

Nominative, neuter, singular of śāśvata

śāśvata - eternal, perpetual, constant

महत् (mahat) - great, vast, supreme, mighty

(adjective)

Nominative, neuter, singular of mahat

mahat - great, large, supreme, noble

एतत् (etat) - this

(pronoun)

Nominative, neuter, singular of etad

etad - this

पुरुष-संज्ञम् (puruṣa-saṁjñam) - named puruṣa, known as the cosmic person (puruṣa)

(adjective)

Nominative, neuter, singular of puruṣa-saṃjña

puruṣa-saṁjña - named Puruṣa, designated as Puruṣa

Compound type : bahuvrīhi (puruṣa+saṃjña)

• puruṣa – man, person, cosmic person (puruṣa), spirit
  noun (masculine)
• saṃjña – name, designation, appellation, known as
  noun (feminine)

वै (vai) - indeed, certainly, verily

(indeclinable)

गीयते (gīyate) - is sung, is praised, is declared

(verb)

3rd person , singular, passive, present (laṭ) of gī

Present Tense

Root gai (to sing), Present Passive, 3rd Person Singular

Root: gai (class 1)

ज्ञायते (jñāyate) - is known, is understood

(verb)

3rd person , singular, passive, present (laṭ) of jñā

Present Tense

Root jñā (to know), Present Passive, 3rd Person Singular

Root: jñā (class 9)

न (na) - not, no

(indeclinable)

च (ca) - and, also, but

(indeclinable)