महाभारतः mahābhārataḥ - book-3, chapter-39, verse-12

ऐन्द्रिः स्थिरमना राजन्सर्वलोकमहारथः ।
त्वरया परया युक्तस्तपसे धृतनिश्चयः ।
वनं कण्टकितं घोरमेक एवान्वपद्यत ॥१२॥

12. aindriḥ sthiramanā rājansarvalokamahārathaḥ ,
tvarayā parayā yuktastapase dhṛtaniścayaḥ ,
vanaṁ kaṇṭakitaṁ ghorameka evānvapadyata.

12. aindriḥ sthiramanāḥ rājan
sarvalokamahārathaḥ tvarayā parayā yuktaḥ
tapase dhṛtaniścayaḥ vanam
kaṇṭakitam ghoram ekaḥ eva anvapadyata

12. O King, the son of Indra, Arjuna, resolute and a great charioteer (mahāratha) in all worlds, endowed with supreme speed, and with a firm resolve for asceticism (tapas), indeed entered that dreadful, thorny forest all alone.

Words meanings summery:

• ऐन्द्रिः (aindriḥ) - Arjuna (son of Indra)

• स्थिरमनाः (sthiramanāḥ) - steady-minded, resolute, firm of mind

• राजन् (rājan) - O king

• सर्वलोकमहारथः (sarvalokamahārathaḥ) - a great charioteer (mahāratha) in all worlds

• त्वरया (tvarayā) - with speed, quickly

• परया (parayā) - supreme, excellent, highest

• युक्तः (yuktaḥ) - endowed with (speed) (endowed with, joined, connected, engaged, suitable)

• तपसे (tapase) - for asceticism, for penance

• धृतनिश्चयः (dhṛtaniścayaḥ) - having firm resolve, having determination

• वनम् (vanam) - forest, wood

• कण्टकितम् (kaṇṭakitam) - thorny, full of thorns

• घोरम् (ghoram) - dreadful, terrible, fearful

• एकः (ekaḥ) - one, alone, solitary

• एव (eva) - only, indeed, just, very

• अन्वपद्यत (anvapadyata) - he entered, he followed

Words meanings and morphology

ऐन्द्रिः (aindriḥ) - Arjuna (son of Indra)

(proper noun)

Nominative, masculine, singular of aindri

aindri - son of Indra

Derivation from Indra

Note: Refers to Arjuna.

स्थिरमनाः (sthiramanāḥ) - steady-minded, resolute, firm of mind

(adjective)

Nominative, masculine, singular of sthiramanas

sthiramanas - steady-minded, resolute

Compound type : bahuvrīhi (sthira+manas)

• sthira – firm, steady, stable
  adjective (masculine)
• manas – mind, intellect
  noun (neuter)

Note: Modifies 'aindriḥ'.

राजन् (rājan) - O king

(noun)

Vocative, masculine, singular of rājan

rājan - king

Note: Addressed to Dhṛtarāṣṭra (implied speaker Vyāsa or Sañjaya).

सर्वलोकमहारथः (sarvalokamahārathaḥ) - a great charioteer (mahāratha) in all worlds

(noun)

Nominative, masculine, singular of sarvalokamahāratha

sarvalokamahāratha - a great charioteer in all worlds

Compound type : tatpuruṣa (sarvaloka+mahāratha)

• sarvaloka – all worlds
  noun (masculine)
• mahāratha – great charioteer, mighty warrior
  noun (masculine)

Note: Epithet for Arjuna.

त्वरया (tvarayā) - with speed, quickly

(noun)

Instrumental, feminine, singular of tvarā

tvarā - speed, haste

Note: Denotes the means or manner.

परया (parayā) - supreme, excellent, highest

(adjective)

Instrumental, feminine, singular of parā

parā - supreme, excellent, highest, extreme

Note: Modifies 'tvarayā'.

युक्तः (yuktaḥ) - endowed with (speed) (endowed with, joined, connected, engaged, suitable)

(adjective)

Nominative, masculine, singular of yukta

yukta - joined, connected, endowed with, engaged, suitable

Past Passive Participle

Derived from √yuj (to join)

Root: yuj (class 7)

Note: Modifies 'aindriḥ'.

तपसे (tapase) - for asceticism, for penance

(noun)

Dative, neuter, singular of tapas

tapas - asceticism, penance, heat, religious austerity (tapas)

Note: Denotes purpose.

धृतनिश्चयः (dhṛtaniścayaḥ) - having firm resolve, having determination

(adjective)

Nominative, masculine, singular of dhṛtaniścaya

dhṛtaniścaya - having firm resolve, having determination

Compound type : bahuvrīhi (dhṛta+niścaya)

• dhṛta – held, borne, firm
  adjective (masculine)
  Past Passive Participle
  Derived from √dhṛ (to hold)
  Root: dhṛ (class 1)
• niścaya – firm resolve, certainty, determination
  noun (masculine)
  Prefix: ni

Note: Modifies 'aindriḥ'.

वनम् (vanam) - forest, wood

(noun)

Accusative, neuter, singular of vana

vana - forest, wood, grove

Note: Object of 'anvapadyata'.

कण्टकितम् (kaṇṭakitam) - thorny, full of thorns

(adjective)

Accusative, neuter, singular of kaṇṭakita

kaṇṭakita - thorny, full of thorns

Note: Modifies 'vanam'.

घोरम् (ghoram) - dreadful, terrible, fearful

(adjective)

Accusative, neuter, singular of ghora

ghora - dreadful, terrible, fearful, formidable

Note: Modifies 'vanam'.

एकः (ekaḥ) - one, alone, solitary

(pronoun)

Nominative, masculine, singular of eka

eka - one, alone, solitary, single

Note: Modifies 'aindriḥ'.

एव (eva) - only, indeed, just, very

(indeclinable)

Note: Emphasizes 'ekaḥ'.

अन्वपद्यत (anvapadyata) - he entered, he followed

(verb)

3rd person , singular, middle, past imperfect (laṅ) of anvapad

Imperfect, Atmanepada, 3rd person singular

Prefixes: anu+apa

Root: pad (class 4)

Note: The verb of the sentence.