योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-72, verse-27

इति वर्षसहस्राणि साकरोद्दारुणं तपः ।
सप्तसप्तमहालोकसंतापकरमुन्मुखी ॥ २७ ॥

iti varṣasahasrāṇi sākaroddāruṇaṃ tapaḥ ,
saptasaptamahālokasaṃtāpakaramunmukhī 27

27. iti varṣasahasrāṇi sā akarot dāruṇam tapaḥ
saptasaptamahālokasaṃtāpakaram unmukhī

27. iti sā unmukhī varṣasahasrāṇi
saptasaptamahālokasaṃtāpakaram dāruṇam tapaḥ akarot

27. Thus, for thousands of years, she, with her face uplifted, performed a severe penance (tapas) that caused distress to the seven great worlds.

Words meanings summery:

• इति (iti) - thus, in this manner, so

• वर्षसहस्राणि (varṣasahasrāṇi) - thousands of years

• सा (sā) - she, that (feminine)

• अकरोत् (akarot) - she did, she performed

• दारुणम् (dāruṇam) - terrible, severe, dreadful, harsh

• तपः (tapaḥ) - penance (tapas), austerity, heat

• सप्तसप्तमहालोकसंतापकरम् (saptasaptamahālokasaṁtāpakaram) - causing great distress/torment to the seven great worlds

• उन्मुखी (unmukhī) - with face uplifted, facing upwards, intent, eager

Words meanings and morphology

इति (iti) - thus, in this manner, so

(indeclinable)

Particle.

वर्षसहस्राणि (varṣasahasrāṇi) - thousands of years

(noun)

Accusative, neuter, plural of varṣasahasra

varṣasahasra - a thousand years

Tatpuruṣa compound of varṣa (year) and sahasra (thousand).

Compound type : tatpuruṣa (varṣa+sahasra)

• varṣa – year, rain
  noun (neuter)
  Root: vṛṣ (class 1)
• sahasra – thousand
  noun (neuter)

Note: Indicates duration of action.

सा (sā) - she, that (feminine)

(pronoun)

Nominative, feminine, singular of tad

tad - that, she, he, it

Demonstrative pronoun.

Note: Subject of the verb akarot.

अकरोत् (akarot) - she did, she performed

(verb)

3rd person , singular, active, past imperfect (laṅ) of kṛ

Imperfect (Laṅ)

3rd person singular, active voice.

Root: kṛ (class 8)

दारुणम् (dāruṇam) - terrible, severe, dreadful, harsh

(adjective)

Accusative, neuter, singular of dāruṇa

dāruṇa - terrible, dreadful, severe, fierce, hard

Note: Agrees with tapaḥ.

तपः (tapaḥ) - penance (tapas), austerity, heat

(noun)

Accusative, neuter, singular of tapas

tapas - penance, austerity, spiritual fervor, heat

From root tap (to heat, to perform austerity).

Root: tap (class 1)

सप्तसप्तमहालोकसंतापकरम् (saptasaptamahālokasaṁtāpakaram) - causing great distress/torment to the seven great worlds

(adjective)

Accusative, neuter, singular of saptasaptamahālokasaṃtāpakara

saptasaptamahālokasaṁtāpakara - causing distress to the seven-seven great worlds (or the entire seven great worlds)

Tatpuruṣa compound of saptasaptamahāloka (seven great worlds) and saṃtāpakara (causing distress).

Compound type : tatpuruṣa (saptasaptamahāloka+saṃtāpakara)

• saptasaptamahāloka – the seven great worlds
  noun (masculine)
  Compound of sapta (seven), sapta (seven), mahā (great), loka (world). 'sapta-sapta' indicates emphasis or totality.
• saṃtāpakara – causing distress, tormenting, causing heat
  adjective
  Compound of saṃtāpa (distress, heat) and kara (making, causing).
  Prefix: sam
  Root: kṛ (class 8)

Note: Agrees with tapaḥ.

उन्मुखी (unmukhī) - with face uplifted, facing upwards, intent, eager

(adjective)

Nominative, feminine, singular of unmukha

unmukha - with face uplifted, facing upwards, attentive, intent, eager

Bahuvrīhi compound of ud (up) and mukha (face).

Compound type : bahuvrīhi (ud+mukha)

• ud – up, upwards, out
  indeclinable
  Prefix.
• mukha – face, mouth, front
  noun (neuter)

Note: Agrees with sā.