महाभारतः mahābhārataḥ - book-12, chapter-169, verse-3

द्विजातेः कस्यचित्पार्थ स्वाध्यायनिरतस्य वै ।
बभूव पुत्रो मेधावी मेधावी नाम नामतः ॥३॥

3. dvijāteḥ kasyacitpārtha svādhyāyaniratasya vai ,
babhūva putro medhāvī medhāvī nāma nāmataḥ.

3. dvijāteḥ kasyacit pārtha svādhyāyaniratasya
vai babhūva putraḥ medhāvī medhāvī nāma nāmataḥ

3. pārtha kasyacit svādhyāyaniratasya vai dvijāteḥ
medhāvī nāma nāmataḥ medhāvī putraḥ babhūva

3. O Pārtha, a certain twice-born (dvijāti) man, who was devoted to his Vedic studies (svādhyāya), indeed had an intelligent son named Medhāvī.

Words meanings summery:

• द्विजातेः (dvijāteḥ) - of a twice-born, of a Brahmin

• कस्यचित् (kasyacit) - of someone, of a certain

• पार्थ (pārtha) - O Pārtha, O Arjuna (son of Pṛthā/Kuntī)

• स्वाध्यायनिरतस्य (svādhyāyaniratasya) - of one devoted to self-study, of one absorbed in Vedic recitation

• वै (vai) - indeed, verily, certainly

• बभूव (babhūva) - was, became, came into being, was born

• पुत्रः (putraḥ) - a son

• मेधावी (medhāvī) - intelligent, sagacious

• मेधावी (medhāvī) - Medhāvī (proper name)

• नाम (nāma) - by name, called

• नामतः (nāmataḥ) - by name, nominally

Words meanings and morphology

द्विजातेः (dvijāteḥ) - of a twice-born, of a Brahmin

(noun)

Genitive, masculine, singular of dvijāti

dvijāti - twice-born (a member of the first three varṇas: Brahmin, Kṣatriya, Vaiśya); a bird; a tooth

Compound of 'dvi' (two) and 'ja' (born)

Compound type : Tatpuruṣa (dvi+ja)

• dvi – two
  numeral
• ja – born, produced from
  adjective
  suffix from root jan
  Root: jan (class 4)

कस्यचित् (kasyacit) - of someone, of a certain

(pronoun)

Genitive, masculine, singular of kaścid

kaścid - someone, something, a certain

Compound of 'kim' and 'cid'

Compound type : Avyayībhāva (kim+cid)

• kim – who, what, which
  pronoun
• cid – particle indicating indefiniteness, 'a certain'
  indeclinable

पार्थ (pārtha) - O Pārtha, O Arjuna (son of Pṛthā/Kuntī)

(proper noun)

Vocative, masculine, singular of pārtha

pārtha - son of Pṛthā (Kuntī), name of Arjuna

Derived from Pṛthā with a patronymic suffix

स्वाध्यायनिरतस्य (svādhyāyaniratasya) - of one devoted to self-study, of one absorbed in Vedic recitation

(adjective)

Genitive, masculine, singular of svādhyāyanirata

svādhyāyanirata - devoted to or engaged in self-study/Vedic recitation

Compound type : Tatpuruṣa (svādhyāya+nirata)

• svādhyāya – self-study, recitation of one's own Veda, Vedic study
  noun (masculine)
  Compound of 'sva' (self) and 'adhyāya' (reading, study)
• nirata – devoted, absorbed, engaged, attached to
  adjective (masculine)
  Past Passive Participle
  from root 'ram' with prefix 'nis' (or 'nir')
  Prefix: nis
  Root: ram (class 1)

वै (vai) - indeed, verily, certainly

(indeclinable)

बभूव (babhūva) - was, became, came into being, was born

(verb)

3rd person , singular, active, perfect (liṭ) of bhū

Root: bhū (class 1)

पुत्रः (putraḥ) - a son

(noun)

Nominative, masculine, singular of putra

putra - son, child

मेधावी (medhāvī) - intelligent, sagacious

(adjective)

Nominative, masculine, singular of medhāvin

medhāvin - intelligent, wise, sagacious, having intellect

Suffix -vin added to 'medhā' (intellect)

मेधावी (medhāvī) - Medhāvī (proper name)

(proper noun)

Nominative, masculine, singular of medhāvin

medhāvin - intelligent, wise; name of a sage

Suffix -vin added to 'medhā' (intellect)

नाम (nāma) - by name, called

(noun)

Accusative, neuter, singular of nāman

nāman - name, appellation, noun

Note: Used adverbially here, meaning 'by name' or 'named'.

नामतः (nāmataḥ) - by name, nominally

(indeclinable)

Note: Formed by adding the suffix -tas to nāman, meaning 'from the name' or 'by name'.