महाभारतः mahābhārataḥ - book-5, chapter-47, verse-30

प्रभद्रकाः शीघ्रतरा युवानो विशारदाः सिंहसमानवीर्याः ।
यदा क्षेप्तारो धार्तराष्ट्रान्ससैन्यांस्तदा युद्धं धार्तराष्ट्रोऽन्वतप्स्यत् ॥३०॥

30. prabhadrakāḥ śīghratarā yuvāno; viśāradāḥ siṁhasamānavīryāḥ ,
yadā kṣeptāro dhārtarāṣṭrānsasainyāṁ;stadā yuddhaṁ dhārtarāṣṭro'nvatapsyat.

30. prabhadrakāḥ śīghratarāḥ yuvānaḥ
viśāradāḥ siṃhasamānavīryāḥ yadā
kṣeptāraḥ dhārtarāṣṭrān sasainyān tadā
yuddham dhārtarāṣṭraḥ anvatapsyat

30. When the excellent, very swift, young, skillful warriors, whose valor is equal to that of lions, would drive away Dhṛtarāṣṭra's sons with their armies, then Dhṛtarāṣṭra would lament the war.

Words meanings summery:

• प्रभद्रकाः (prabhadrakāḥ) - excellent, very good ones

• शीघ्रतराः (śīghratarāḥ) - very swift, swifter

• युवानः (yuvānaḥ) - young ones, youths

• विशारदाः (viśāradāḥ) - skillful, expert

• सिंहसमानवीर्याः (siṁhasamānavīryāḥ) - whose valor is equal to that of a lion, lion-like in valor

• यदा (yadā) - when

• क्षेप्तारः (kṣeptāraḥ) - those who would drive away, throwers

• धार्तराष्ट्रान् (dhārtarāṣṭrān) - the Kauravas (the sons of Dhṛtarāṣṭra)

• ससैन्यान् (sasainyān) - with their armies

• तदा (tadā) - then

• युद्धम् (yuddham) - the war, battle

• धार्तराष्ट्रः (dhārtarāṣṭraḥ) - Dhṛtarāṣṭra (the king, father of the Kauravas) (Dhṛtarāṣṭra (son of Dhṛtarāṣṭra))

• अन्वतप्स्यत् (anvatapsyat) - would lament, would regret

Words meanings and morphology

प्रभद्रकाः (prabhadrakāḥ) - excellent, very good ones

(adjective)

Nominative, masculine, plural of prabhadraka

prabhadraka - very good, excellent, illustrious

शीघ्रतराः (śīghratarāḥ) - very swift, swifter

(adjective)

Nominative, masculine, plural of śīghratara

śīghratara - swifter, very swift

comparative degree of śīghra

Note: Modifies 'prabhadrakāḥ'.

युवानः (yuvānaḥ) - young ones, youths

(noun)

Nominative, masculine, plural of yuvan

yuvan - young, youth

Note: Modifies 'prabhadrakāḥ' or is an apposition.

विशारदाः (viśāradāḥ) - skillful, expert

(adjective)

Nominative, masculine, plural of viśārada

viśārada - skillful, expert, intelligent

Note: Modifies 'prabhadrakāḥ'.

सिंहसमानवीर्याः (siṁhasamānavīryāḥ) - whose valor is equal to that of a lion, lion-like in valor

(adjective)

Nominative, masculine, plural of siṃhasamānavīrya

siṁhasamānavīrya - whose valor is equal to that of a lion

Compound type : bahuvrīhi (siṃha+samāna+vīrya)

• siṃha – lion
  noun (masculine)
• samāna – equal, similar
  adjective (masculine)
• vīrya – valor, strength
  noun (neuter)

Note: Modifies 'prabhadrakāḥ'.

यदा (yadā) - when

(indeclinable)

क्षेप्तारः (kṣeptāraḥ) - those who would drive away, throwers

(noun)

Nominative, masculine, plural of kṣeptṛ

kṣeptṛ - thrower, one who expels/drives away

agent noun

from root kṣip

Root: kṣip (class 6)

Note: Subject of the 'yadā' clause, referring to the young warriors.

धार्तराष्ट्रान् (dhārtarāṣṭrān) - the Kauravas (the sons of Dhṛtarāṣṭra)

(proper noun)

Accusative, masculine, plural of dhārtarāṣṭra

dhārtarāṣṭra - son of Dhṛtarāṣṭra

patronymic from Dhṛtarāṣṭra

Note: Object of 'kṣeptāraḥ'.

ससैन्यान् (sasainyān) - with their armies

(adjective)

Accusative, masculine, plural of sasainya

sasainya - accompanied by an army, with an army

Compound type : bahuvrīhi (sa+sainya)

• sa – with, accompanied by
  indeclinable
• sainya – army
  noun (neuter)

Note: Modifies 'dhārtarāṣṭrān'.

तदा (tadā) - then

(indeclinable)

युद्धम् (yuddham) - the war, battle

(noun)

Accusative, neuter, singular of yuddha

yuddha - war, battle, fight

Past Passive Participle (used substantively)

from root yudh

Root: yudh (class 4)

Note: Object of 'anvatapsyat'.

धार्तराष्ट्रः (dhārtarāṣṭraḥ) - Dhṛtarāṣṭra (the king, father of the Kauravas) (Dhṛtarāṣṭra (son of Dhṛtarāṣṭra))

(proper noun)

Nominative, masculine, singular of dhārtarāṣṭra

dhārtarāṣṭra - son of Dhṛtarāṣṭra, belonging to Dhṛtarāṣṭra

patronymic from Dhṛtarāṣṭra

Note: Subject of 'anvatapsyat'.

अन्वतप्स्यत् (anvatapsyat) - would lament, would regret

(verb)

3rd person , singular, active, past imperfect (laṅ) of anutap

from root tap with prefix anu

Prefix: anu

Root: tap (class 1)

Note: Often used in conditional 'yada...tada' clauses to indicate 'would' or 'then'.