महाभारतः mahābhārataḥ - book-12, chapter-338, verse-10

तत्राध्यात्मगतिं देव एकाकी प्रविचिन्तयन् ।
वैराजसदने नित्यं वैजयन्तं निषेवते ॥१०॥

10. tatrādhyātmagatiṁ deva ekākī pravicintayan ,
vairājasadane nityaṁ vaijayantaṁ niṣevate.

10. tatra adhyātmagatim devaḥ ekākī pravicintayan
vairājasadane nityam vaijayantam niṣevate

10. devaḥ ekākī nityam adhyātmagatim pravicintayan
tatra vairājasadane vaijayantam niṣevate

10. There, the god (Brahma), dwelling alone in his palace named Vaijayanta, constantly meditates on the spiritual state (adhyātma).

Words meanings summery:

• तत्र (tatra) - there, in that place

• अध्यात्मगतिम् (adhyātmagatim) - spiritual path, spiritual state

• देवः (devaḥ) - the god Brahma (a god, a deity)

• एकाकी (ekākī) - alone, solitary

• प्रविचिन्तयन् (pravicintayan) - contemplating, meditating deeply

• वैराजसदने (vairājasadane) - in Brahma's palace (in the palace of Virāja)

• नित्यम् (nityam) - always, constantly, perpetually

• वैजयन्तम् (vaijayantam) - the palace named Vaijayanta (victorious; named Vaijayanta)

• निषेवते (niṣevate) - dwells, resides, attends, serves

Words meanings and morphology

तत्र (tatra) - there, in that place

(indeclinable)

अध्यात्मगतिम् (adhyātmagatim) - spiritual path, spiritual state

(noun)

Accusative, feminine, singular of adhyātmagati

adhyātmagati - spiritual path, spiritual state

Compound type : tatpurusha (adhyātma+gati)

• adhyātma – relating to the self or spirit
  noun (neuter)
• gati – movement, path, state, course
  noun (feminine)

देवः (devaḥ) - the god Brahma (a god, a deity)

(noun)

Nominative, masculine, singular of deva

deva - god, deity

एकाकी (ekākī) - alone, solitary

(adjective)

Nominative, masculine, singular of ekākin

ekākin - alone, solitary

प्रविचिन्तयन् (pravicintayan) - contemplating, meditating deeply

(nominal form)

Nominative, masculine, singular of pravicintayat

pravicintayat - contemplating, meditating

Present Active Participle

from pra-√cint, Class 10 verb

Prefixes: pra+vi

Root: cint (class 10)

Note: Participle

वैराजसदने (vairājasadane) - in Brahma's palace (in the palace of Virāja)

(noun)

Locative, neuter, singular of vairājasadana

vairājasadana - palace of Virāja

Compound type : tatpurusha (virāja+sadana)

• virāja – Virāja (a name for Brahma)
  noun (masculine)
• sadana – abode, residence, palace
  noun (neuter)

नित्यम् (nityam) - always, constantly, perpetually

(indeclinable)

वैजयन्तम् (vaijayantam) - the palace named Vaijayanta (victorious; named Vaijayanta)

(adjective)

Accusative, neuter, singular of vaijayanta

vaijayanta - victorious, named Vaijayanta

निषेवते (niṣevate) - dwells, resides, attends, serves

(verb)

3rd person , singular, middle, present (laṭ) of niṣevate

Present Tense, 3rd person singular

Prefix: ni

Root: sev (class 1)