महाभारतः mahābhārataḥ - book-4, chapter-53, verse-14

हर्षयुक्तस्तथा पार्थः प्रहसन्निव वीर्यवान् ।
रथं रथेन द्रोणस्य समासाद्य महारथः ॥१४॥

14. harṣayuktastathā pārthaḥ prahasanniva vīryavān ,
rathaṁ rathena droṇasya samāsādya mahārathaḥ.

14. harṣayuktaḥ tathā pārthaḥ prahasan iva vīryavān
ratham rathena droṇasya samāsādya mahārathaḥ

14. The valiant Arjuna (Pārtha), filled with joy and as if laughing, then, being a great warrior (mahāratha), approached Droṇa's chariot with his own chariot.

Words meanings summery:

• हर्षयुक्तः (harṣayuktaḥ) - joyful, filled with joy

• तथा (tathā) - thus, so, then, in that manner

• पार्थः (pārthaḥ) - Arjuna (son of Pṛthā/Kuntī)

• प्रहसन् (prahasan) - laughing, smiling

• इव (iva) - as if, like, similar to

• वीर्यवान् (vīryavān) - valorous, powerful, heroic

• रथम् (ratham) - chariot

• रथेन (rathena) - by the chariot, with the chariot

• द्रोणस्य (droṇasya) - of Drona

• समासाद्य (samāsādya) - having approached, having reached

• महारथः (mahārathaḥ) - great warrior, one who can fight a thousand warriors from his chariot

Words meanings and morphology

हर्षयुक्तः (harṣayuktaḥ) - joyful, filled with joy

(adjective)

Nominative, masculine, singular of harṣayukta

harṣayukta - joined with joy, joyful

Compound type : Tatpuruṣa (harṣa+yukta)

• harṣa – joy, delight
  noun (masculine)
• yukta – joined, connected, endowed with
  adjective (masculine/feminine/neuter)
  Past Passive Participle
  Root: yuj (class 7)

तथा (tathā) - thus, so, then, in that manner

(indeclinable)

पार्थः (pārthaḥ) - Arjuna (son of Pṛthā/Kuntī)

(proper noun)

Nominative, masculine, singular of pārtha

pārtha - descendant of Pṛthā; Arjuna

प्रहसन् (prahasan) - laughing, smiling

(adjective)

Nominative, masculine, singular of prahasat

prahasat - laughing, smiling

Present Active Participle

Formed from root has with prefix pra-.

Prefix: pra

Root: has (class 1)

इव (iva) - as if, like, similar to

(indeclinable)

वीर्यवान् (vīryavān) - valorous, powerful, heroic

(adjective)

Nominative, masculine, singular of vīryavat

vīryavat - possessing valor/heroism

रथम् (ratham) - chariot

(noun)

Accusative, masculine, singular of ratha

ratha - chariot, car

रथेन (rathena) - by the chariot, with the chariot

(noun)

Instrumental, masculine, singular of ratha

ratha - chariot, car

द्रोणस्य (droṇasya) - of Drona

(proper noun)

Genitive, masculine, singular of droṇa

droṇa - Droṇa (name of a preceptor)

समासाद्य (samāsādya) - having approached, having reached

(indeclinable)

Absolutive / Gerund

Formed from root sad with prefixes sam- and ā-.

Prefixes: sam+ā

Root: sad (class 1)

महारथः (mahārathaḥ) - great warrior, one who can fight a thousand warriors from his chariot

(noun)

Nominative, masculine, singular of mahāratha

mahāratha - great warrior, great chariot-fighter

Compound type : Karmadhāraya (mahat+ratha)

• mahat – great, large
  adjective (neuter)
• ratha – chariot, car
  noun (masculine)