महाभारतः mahābhārataḥ - book-3, chapter-146, verse-50

तेन शब्देन चोग्रेण भीमसेनरवेण च ।
वनान्तरगताः सर्वे वित्रेसुर्मृगपक्षिणः ॥५०॥

50. tena śabdena cogreṇa bhīmasenaraveṇa ca ,
vanāntaragatāḥ sarve vitresurmṛgapakṣiṇaḥ.

50. tena śabdena ca ugreṇa bhīmasenaraveṇa ca
vanaantaragatāḥ sarve vitresuḥ mṛgapakṣiṇaḥ

50. By that fierce sound and Bhimasena's roar, all the animals and birds that had gone into the forest's interior trembled.

Words meanings summery:

• तेन (tena) - by that (sound) (by that, by him, by it)

• शब्देन (śabdena) - by the sound (by sound, by word, by noise)

• च (ca) - and (and, also)

• उग्रेण (ugreṇa) - by the fierce (sound) (by fierce, by terrible, by dreadful)

• भीमसेनरवेण (bhīmasenaraveṇa) - by the roar of Bhimasena (by Bhimasena's roar)

• च (ca) - and (and, also)

• वनअन्तरगताः (vanaantaragatāḥ) - those who had entered the interior of the forest (gone into the interior of the forest)

• सर्वे (sarve) - all (of them) (all, every)

• वित्रेसुः (vitresuḥ) - they trembled (they trembled, they were frightened)

• मृगपक्षिणः (mṛgapakṣiṇaḥ) - the deer and birds (deer and birds, wild animals and birds)

Words meanings and morphology

तेन (tena) - by that (sound) (by that, by him, by it)

(pronoun)

Instrumental, masculine, singular of tad

tad - that, he, she, it

Note: Demonstrative pronoun

शब्देन (śabdena) - by the sound (by sound, by word, by noise)

(noun)

Instrumental, masculine, singular of śabda

śabda - sound, word, noise, voice

च (ca) - and (and, also)

(indeclinable)

उग्रेण (ugreṇa) - by the fierce (sound) (by fierce, by terrible, by dreadful)

(adjective)

Instrumental, masculine, singular of ugra

ugra - fierce, terrible, dreadful, mighty

Note: Agrees with śabdena

भीमसेनरवेण (bhīmasenaraveṇa) - by the roar of Bhimasena (by Bhimasena's roar)

(noun)

Instrumental, masculine, singular of bhīmasenarava

bhīmasenarava - Bhimasena's roar

Compound type : tatpurusha (bhīmasena+rava)

• bhīmasena – Bhimasena (name of a Pandava prince)
  proper noun (masculine)
• rava – roar, sound, cry
  noun (masculine)

Note: Tatpurusha compound: Bhīmasenasya ravaḥ

च (ca) - and (and, also)

(indeclinable)

वनअन्तरगताः (vanaantaragatāḥ) - those who had entered the interior of the forest (gone into the interior of the forest)

(adjective)

Nominative, masculine, plural of vanaantaragata

vanaantaragata - gone into the interior of the forest

Compound type : tatpurusha (vana+antara+gata)

• vana – forest, wood
  noun (neuter)
• antara – interior, middle, inside
  noun (neuter)
• gata – gone, arrived, reached
  adjective (masculine)
  Past Passive Participle
  Derived from root √gam (to go)
  Root: gam (class 1)

Note: Agrees with mṛgapakṣiṇaḥ and sarve

सर्वे (sarve) - all (of them) (all, every)

(pronoun)

Nominative, masculine, plural of sarva

sarva - all, every, whole

Note: Can function as an adjective here, referring to the animals and birds

वित्रेसुः (vitresuḥ) - they trembled (they trembled, they were frightened)

(verb)

3rd person , plural, active, perfect (lit) of tras

Prefix: vi

Root: tras (class 1)

मृगपक्षिणः (mṛgapakṣiṇaḥ) - the deer and birds (deer and birds, wild animals and birds)

(noun)

Nominative, masculine, plural of mṛgapakṣin

mṛgapakṣin - deer and birds, wild animals and birds

Compound type : dvandva (mṛga+pakṣin)

• mṛga – deer, wild animal
  noun (masculine)
• pakṣin – bird, winged creature
  noun (masculine)