महाभारतः mahābhārataḥ - book-7, chapter-135, verse-48

ततः प्रविव्यथे सेना पाण्डवी भरतर्षभ ।
दृष्ट्वा द्रौणेर्महत्कर्म वासवस्येव संयुगे ॥४८॥

48. tataḥ pravivyathe senā pāṇḍavī bharatarṣabha ,
dṛṣṭvā drauṇermahatkarma vāsavasyeva saṁyuge.

48. tataḥ pravivyathe senā pāṇḍavī bharatarṣabha
dṛṣṭvā drauṇeḥ mahat karma vāsavasya iva saṃyuge

48. bharatarṣabha tataḥ drauṇeḥ vāsavasya iva saṃyuge
mahat karma dṛṣṭvā pāṇḍavī senā pravivyathe

48. O best among the Bharatas, the Pandava army was then greatly distressed, seeing Drauni's mighty feat, which was like that of Indra (Vasava) himself in battle.

Words meanings summery:

• ततः (tataḥ) - then, thence, afterwards

• प्रविव्यथे (pravivyathe) - was greatly distressed, trembled, became agitated

• सेना (senā) - army, host

• पाण्डवी (pāṇḍavī) - Pandava's, belonging to the Pandavas

• भरतर्षभ (bharatarṣabha) - O best of Bharatas

• दृष्ट्वा (dṛṣṭvā) - having seen, having perceived

• द्रौणेः (drauṇeḥ) - of Drauni, of the son of Drona (Aśvatthāmā)

• महत् (mahat) - great, mighty, vast

• कर्म (karma) - feat, heroic act (deed, action, act, work (karma))

• वासवस्य (vāsavasya) - of Vasava, of Indra

• इव (iva) - like, as, as if

• संयुगे (saṁyuge) - in battle, in conflict, in combat

Words meanings and morphology

ततः (tataḥ) - then, thence, afterwards

(indeclinable)

प्रविव्यथे (pravivyathe) - was greatly distressed, trembled, became agitated

(verb)

3rd person , singular, middle, perfect past (liṭ) of pra-vyath

Prefix: pra

Root: vyath (class 1)

सेना (senā) - army, host

(noun)

Nominative, feminine, singular of senā

senā - army, host, armed force

पाण्डवी (pāṇḍavī) - Pandava's, belonging to the Pandavas

(adjective)

Nominative, feminine, singular of pāṇḍava

pāṇḍava - descendant of Pāṇḍu, relating to Pāṇḍu

Derived from Pāṇḍu (name of king).

भरतर्षभ (bharatarṣabha) - O best of Bharatas

(proper noun)

Vocative, masculine, singular of bharatarṣabha

bharatarṣabha - bull among the Bharatas, best of the Bharatas

Compound type : tatpuruṣa (bharata+ṛṣabha)

• bharata – descendant of Bharata, name of a king, a member of the Bharata lineage
  proper noun (masculine)
• ṛṣabha – bull, best, chief, excellent
  noun (masculine)

दृष्ट्वा (dṛṣṭvā) - having seen, having perceived

(indeclinable)

absolutive (gerund)

Formed from root dṛś with suffix -tvā.

Root: dṛś (class 1)

द्रौणेः (drauṇeḥ) - of Drauni, of the son of Drona (Aśvatthāmā)

(proper noun)

Genitive, masculine, singular of drauṇi

drauṇi - son of Drona, Aśvatthāmā

Patronymic from droṇa.

महत् (mahat) - great, mighty, vast

(adjective)

Accusative, neuter, singular of mahat

mahat - great, large, mighty, important

Note: Agrees with 'karma'.

कर्म (karma) - feat, heroic act (deed, action, act, work (karma))

(noun)

Accusative, neuter, singular of karman

karman - action, deed, work, ritual, fate (karma)

Derived from root √kṛ (to do).

Root: kṛ (class 8)

वासवस्य (vāsavasya) - of Vasava, of Indra

(proper noun)

Genitive, masculine, singular of vāsava

vāsava - name of Indra, relating to the Vasus

Descendant of Vasu, or lord of the Vasus.

इव (iva) - like, as, as if

(indeclinable)

संयुगे (saṁyuge) - in battle, in conflict, in combat

(noun)

Locative, masculine, singular of saṃyuga

saṁyuga - battle, war, combat, conflict

From sam-yuj (to join, to fight).

Prefix: sam

Root: yuj (class 7)