महाभारतः mahābhārataḥ - book-7, chapter-165, verse-109

नैष जातु परैः शक्यो जेतुं शस्त्रभृतां वरः ।
अपि वृत्रहणा संख्ये रथयूथपयूथपः ॥१०९॥

109. naiṣa jātu paraiḥ śakyo jetuṁ śastrabhṛtāṁ varaḥ ,
api vṛtrahaṇā saṁkhye rathayūthapayūthapaḥ.

109. na eṣaḥ jātu paraiḥ śakyaḥ jetum śastrabṛtām
varaḥ api vṛtrahaṇā saṅkhye rathayūthapayūthapaḥ

109. śastrabṛtām varaḥ rathayūthapayūthapaḥ eṣaḥ jātu
saṅkhye paraiḥ api vṛtrahaṇā na jetum śakyaḥ

109. This chief among weapon-bearers, the leader of the leaders of chariot divisions (rathayūthapayūthapaḥ), can never be defeated by enemies in battle, not even by Indra (vṛtrahaṇā).

Words meanings summery:

• न (na) - not, no

• एषः (eṣaḥ) - Droṇa (this (man))

• जातु (jātu) - ever, at any time, certainly

• परैः (paraiḥ) - by others, by enemies

• शक्यः (śakyaḥ) - capable of, able to be, possible (to be conquered)

• जेतुम् (jetum) - to conquer, to be conquered

• शस्त्रबृताम् (śastrabṛtām) - of the weapon-bearers, among warriors

• वरः (varaḥ) - best, excellent, choicest

• अपि (api) - even, also, too

• वृत्रहणा (vṛtrahaṇā) - by Indra (by the slayer of Vṛtra (Indra))

• सङ्ख्ये (saṅkhye) - in battle, in combat

• रथयूथपयूथपः (rathayūthapayūthapaḥ) - Droṇa, as the supreme commander of chariot forces (the chief of the chiefs of chariot divisions)

Words meanings and morphology

न (na) - not, no

(indeclinable)

एषः (eṣaḥ) - Droṇa (this (man))

(pronoun)

Nominative, masculine, singular of etad

etad - this

जातु (jātu) - ever, at any time, certainly

(indeclinable)

परैः (paraiḥ) - by others, by enemies

(adjective)

Instrumental, masculine, plural of para

para - other, another, enemy, supreme

शक्यः (śakyaḥ) - capable of, able to be, possible (to be conquered)

(adjective)

Nominative, masculine, singular of śakya

śakya - capable of, able to be, possible

Gerundive (Potential Passive Participle)

Derived from root śak (to be able).

Root: śak (class 5)

जेतुम् (jetum) - to conquer, to be conquered

(indeclinable)

Infinitive

Dative infinitive derived from root ji (to conquer).

Root: ji (class 1)

शस्त्रबृताम् (śastrabṛtām) - of the weapon-bearers, among warriors

(noun)

Genitive, masculine, plural of śastrabṛt

śastrabṛt - weapon-bearer, warrior

Compound type : tatpuruṣa (śastra+bhṛt)

• śastra – weapon, instrument
  noun (neuter)
  Root: śas (class 2)
• bhṛt – bearing, carrying, maintaining (agent noun/adjective)
  adjective (masculine)
  Agent Noun/Adjective
  Derived from root bhṛ (to bear, carry).
  Root: bhṛ (class 1)

वरः (varaḥ) - best, excellent, choicest

(adjective)

Nominative, masculine, singular of vara

vara - best, excellent, choice, boon

Root: vṛ (class 1)

अपि (api) - even, also, too

(indeclinable)

वृत्रहणा (vṛtrahaṇā) - by Indra (by the slayer of Vṛtra (Indra))

(proper noun)

Instrumental, masculine, singular of vṛtrahan

vṛtrahan - slayer of Vṛtra (epithet of Indra)

Compound type : tatpuruṣa (vṛtra+han)

• vṛtra – Vṛtra (a powerful Asura demon)
  proper noun (masculine)
• han – slayer, striker (agent noun)
  noun (masculine)
  Agent Noun
  Derived from root han (to strike, kill).
  Root: han (class 2)

सङ्ख्ये (saṅkhye) - in battle, in combat

(noun)

Locative, neuter, singular of saṅkhya

saṅkhya - battle, combat, conflict

रथयूथपयूथपः (rathayūthapayūthapaḥ) - Droṇa, as the supreme commander of chariot forces (the chief of the chiefs of chariot divisions)

(noun)

Nominative, masculine, singular of rathayūthapayūthapa

rathayūthapayūthapa - chief of the chiefs of chariot divisions, supreme commander of chariot forces

A complex tatpuruṣa compound meaning 'the chief of (those who are) chiefs of chariot divisions'.

Compound type : tatpuruṣa (rathayūthapa+yūthapa)

• rathayūthapa – chief of chariot divisions
  noun (masculine)
• yūthapa – chief of groups, commander
  noun (masculine)
  Derived from yūtha (group) and pa (protector/chief).
  Root: pā (class 1)