योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-55, verse-21

भाति केवलमेवेत्थं परमार्थघनं घनम् ।
यन्न शून्यं न वाऽशून्यमत्यच्छं गगनादपि ॥ २१ ॥

bhāti kevalamevetthaṃ paramārthaghanaṃ ghanam ,
yanna śūnyaṃ na vā'śūnyamatyacchaṃ gaganādapi 21

21. bhāti kevalam eva ittham paramārthaghanam ghanam
yat na śūnyam na vā aśūnyam atyaccham gaganāt api

21. ittham kevalam eva paramārthaghanam ghanam bhāti
yat na śūnyam na vā aśūnyam gaganāt api atyaccham

21. It (the ultimate reality) shines forth in this manner, simply as dense, full of ultimate reality. It is neither void nor non-void, and it is supremely clear, even more so than the sky.

Words meanings summery:

• भाति (bhāti) - shines, appears, manifests

• केवलम् (kevalam) - merely, only, solely

• एव (eva) - indeed, only, certainly

• इत्थम् (ittham) - thus, in this manner

• परमार्थघनम् (paramārthaghanam) - dense with ultimate reality/truth

• घनम् (ghanam) - dense, solid, compact

• यत् (yat) - which

• न (na) - not

• शून्यम् (śūnyam) - void, empty, zero

• न (na) - not

• वा (vā) - or

• अशून्यम् (aśūnyam) - non-void, not empty

• अत्यच्छम् (atyaccham) - supremely clear/pure

• गगनात् (gaganāt) - from the sky, than the sky

• अपि (api) - also, even, indeed

Words meanings and morphology

भाति (bhāti) - shines, appears, manifests

(verb)

3rd person , singular, active, present indicative (laṭ) of bhā

Root: bhā (class 2)

केवलम् (kevalam) - merely, only, solely

(adjective)

Nominative, neuter, singular of kevala

kevala - alone, only, sole, mere, pure

एव (eva) - indeed, only, certainly

(indeclinable)

इत्थम् (ittham) - thus, in this manner

(indeclinable)

परमार्थघनम् (paramārthaghanam) - dense with ultimate reality/truth

(adjective)

Nominative, neuter, singular of paramārthaghana

paramārthaghana - dense with ultimate reality, full of supreme truth

Compound type : tatpuruṣa (parama+artha+ghana)

• parama – supreme, highest, ultimate
  adjective (neuter)
• artha – meaning, purpose, reality, wealth
  noun (masculine)
• ghana – dense, solid, compact, thick
  adjective (neuter)

घनम् (ghanam) - dense, solid, compact

(adjective)

Nominative, neuter, singular of ghana

ghana - dense, solid, compact, thick, cloud

यत् (yat) - which

(pronoun)

Nominative, neuter, singular of yad

yad - which, that which, who

न (na) - not

(indeclinable)

शून्यम् (śūnyam) - void, empty, zero

(adjective)

Nominative, neuter, singular of śūnya

śūnya - empty, void, null, zero

न (na) - not

(indeclinable)

वा (vā) - or

(indeclinable)

अशून्यम् (aśūnyam) - non-void, not empty

(adjective)

Nominative, neuter, singular of aśūnya

aśūnya - not empty, not void, not zero, full

अत्यच्छम् (atyaccham) - supremely clear/pure

(adjective)

Nominative, neuter, singular of atyaccha

atyaccha - supremely clear, very pure, extremely transparent

Compound type : karmadhāraya (ati+accha)

• ati – over, beyond, exceeding, very
  indeclinable
• accha – clear, pure, transparent
  adjective (neuter)

गगनात् (gaganāt) - from the sky, than the sky

(noun)

Ablative, neuter, singular of gagana

gagana - sky, heaven, ether, atmosphere

अपि (api) - also, even, indeed

(indeclinable)