महाभारतः mahābhārataḥ - book-12, chapter-78, verse-7

केकयानामधिपतिं रक्षो जग्राह दारुणम् ।
स्वाध्यायेनान्वितं राजन्नरण्ये संशितव्रतम् ॥७॥

7. kekayānāmadhipatiṁ rakṣo jagrāha dāruṇam ,
svādhyāyenānvitaṁ rājannaraṇye saṁśitavratam.

7. kekayānām adhipatim rakṣaḥ jagrāha dāruṇam
svādhyāyena anvitam rājan araṇye saṃśitavratam

7. rājan,
dāruṇam rakṣaḥ jagrāha kekayānām adhipatim svādhyāyena anvitam araṇye saṃśitavratam

7. O King, a fierce demon seized the lord of the Kekayas, who was endowed with scriptural study (svādhyāya) and had undertaken severe vows (saṃśitavrata) in the forest.

Words meanings summery:

• केकयानाम् (kekayānām) - of the Kekayas (people/country)

• अधिपतिम् (adhipatim) - lord, ruler, chief

• रक्षः (rakṣaḥ) - a demon

• जग्राह (jagrāha) - seized, grasped, caught

• दारुणम् (dāruṇam) - fierce, terrible, cruel

• स्वाध्यायेन (svādhyāyena) - by self-study, by scriptural study

• अन्वितम् (anvitam) - accompanied, endowed, possessed of

• राजन् (rājan) - O King! (vocative)

• अरण्ये (araṇye) - in the forest

• संशितव्रतम् (saṁśitavratam) - one who has undertaken severe vows

Words meanings and morphology

केकयानाम् (kekayānām) - of the Kekayas (people/country)

(proper noun)

Genitive, masculine, plural of kekaya

kekaya - name of a people/country

अधिपतिम् (adhipatim) - lord, ruler, chief

(noun)

Accusative, masculine, singular of adhipati

adhipati - lord, ruler, chief

Note: Object of `jagrāha`.

रक्षः (rakṣaḥ) - a demon

(noun)

Nominative, neuter, singular of rakṣas

rakṣas - demon, Rākṣasa

Note: Subject of `jagrāha`.

जग्राह (jagrāha) - seized, grasped, caught

(verb)

3rd person , singular, active, perfect (lit) of grah

Perfect tense form, reduplicated root `graha`

Root: grah (class 9)

दारुणम् (dāruṇam) - fierce, terrible, cruel

(adjective)

Nominative, neuter, singular of dāruṇa

dāruṇa - fierce, terrible, cruel

स्वाध्यायेन (svādhyāyena) - by self-study, by scriptural study

(noun)

Instrumental, masculine, singular of svādhyāya

svādhyāya - self-study, recitation of sacred texts, scriptural study

Note: Means by which `anvitam` (accompanied).

अन्वितम् (anvitam) - accompanied, endowed, possessed of

(adjective)

Accusative, masculine, singular of anvita

anvita - accompanied, endowed with, possessed of

Past Passive Participle

From root i (to go) with upasarga anu

Prefix: anu

Root: i (class 2)

राजन् (rājan) - O King! (vocative)

(noun)

Vocative, masculine, singular of rājan

rājan - king, ruler

Root: rāj (class 1)

Note: Addressed to the listener/narrator.

अरण्ये (araṇye) - in the forest

(noun)

Locative, neuter, singular of araṇya

araṇya - forest, wilderness

Note: Location of the king.

संशितव्रतम् (saṁśitavratam) - one who has undertaken severe vows

(adjective)

Accusative, masculine, singular of saṃśitavrata

saṁśitavrata - one whose vows are firmly fixed, one who has undertaken severe vows

Bahuvrīhi compound

Compound type : Bahuvrīhi (saṃśita+vrata)

• saṃśita – sharpened, firm, severe
  adjective (masculine)
  Past Passive Participle
  From root śi (to sharpen) with upasarga sam
  Prefix: sam
  Root: śi (class 2)
• vrata – vow, sacred observance
  noun (neuter)
  Root: vṛ (class 1)

Note: Agrees with `adhipatim`.