महाभारतः mahābhārataḥ - book-5, chapter-81, verse-18

सूपस्करमनाधृष्यं वैयाघ्रपरिवारणम् ।
यशोघ्नं प्रत्यमित्राणां यदूनां नन्दिवर्धनम् ॥१८॥

18. sūpaskaramanādhṛṣyaṁ vaiyāghraparivāraṇam ,
yaśoghnaṁ pratyamitrāṇāṁ yadūnāṁ nandivardhanam.

18. su-upaskaram an-ādhṛṣyam vaiyāghra-parivāraṇam
yaśaḥ-ghnam prati-amitrāṇām yadūnām nandi-vardhanam

18. It was well-equipped and unassailable, covered with tiger skins. It annihilated the glory of adversaries and enhanced the prosperity of the Yadus.

Words meanings summery:

• सु-उपस्करम् (su-upaskaram) - well-equipped, having good accessories

• अन्-आधृष्यम् (an-ādhṛṣyam) - unassailable, invincible, not to be attacked

• वैयाघ्र-परिवारणम् (vaiyāghra-parivāraṇam) - having coverings of tiger-skin, protected by tiger-skins

• यशः-घ्नम् (yaśaḥ-ghnam) - destroying the glory of enemies (glory-destroying, destroying fame)

• प्रति-अमित्राणाम् (prati-amitrāṇām) - of the enemies

• यदूनाम् (yadūnām) - of the Yadus

• नन्दि-वर्धनम् (nandi-vardhanam) - increasing the joy/prosperity of the Yadus (increasing joy, enhancing prosperity)

Words meanings and morphology

सु-उपस्करम् (su-upaskaram) - well-equipped, having good accessories

(adjective)

Accusative, masculine, singular of su-upaskara

su-upaskara - well-equipped, having excellent implements/accessories

Compound type : bahuvrihi (su+upaskara)

• su – good, excellent, well
  indeclinable
• upaskara – apparatus, equipment, accessories
  noun (masculine)
  from upa-kṛ
  Prefix: upa
  Root: kṛ (class 8)

अन्-आधृष्यम् (an-ādhṛṣyam) - unassailable, invincible, not to be attacked

(adjective)

Accusative, masculine, singular of an-ādhṛṣya

an-ādhṛṣya - unassailable, invincible, not to be overcome

Gerundive/Potential Passive Participle

from ā-dhṛṣ with prefix 'an-' (negation)

Compound type : nañ-tatpurusha (an+ādhṛṣya)

• an – not, un-
  indeclinable
• ādhṛṣya – to be attacked, assailable
  adjective (masculine)
  Gerundive/Potential Passive Participle
  From root dhṛṣ with prefix ā-
  Prefix: ā
  Root: dhṛṣ (class 5)

वैयाघ्र-परिवारणम् (vaiyāghra-parivāraṇam) - having coverings of tiger-skin, protected by tiger-skins

(adjective)

Accusative, masculine, singular of vaiyāghra-parivāraṇa

vaiyāghra-parivāraṇa - having tiger-skin coverings

Compound type : bahuvrihi (vaiyāghra+parivāraṇa)

• vaiyāghra – of a tiger, tiger-like, tiger-skin
  adjective (masculine)
  derived from vyāghra (tiger)
• parivāraṇa – covering, enclosure, protection
  noun (neuter)
  from pari-vṛ
  Prefix: pari
  Root: vṛ (class 5)

यशः-घ्नम् (yaśaḥ-ghnam) - destroying the glory of enemies (glory-destroying, destroying fame)

(adjective)

Accusative, masculine, singular of yaśaḥ-ghna

yaśaḥ-ghna - destroying glory/fame

Compound type : upapada-tatpurusha (yaśas+ghna)

• yaśas – glory, fame, renown
  noun (neuter)
• ghna – destroying, killing, striking
  adjective (masculine)
  derived from root han (to strike, kill)
  Root: han (class 2)

प्रति-अमित्राणाम् (prati-amitrāṇām) - of the enemies

(noun)

Genitive, masculine, plural of prati-amitra

prati-amitra - adversary, enemy

यदूनाम् (yadūnām) - of the Yadus

(proper noun)

Genitive, masculine, plural of yadu

yadu - Yadu (name of an ancient king and his dynasty, to which Krishna belonged)

Note: Refers to the clan of Krishna.

नन्दि-वर्धनम् (nandi-vardhanam) - increasing the joy/prosperity of the Yadus (increasing joy, enhancing prosperity)

(adjective)

Accusative, masculine, singular of nandi-vardhana

nandi-vardhana - increasing joy, prosperity, delight

Compound type : upapada-tatpurusha (nandi+vardhana)

• nandi – joy, happiness, delight, prosperity
  noun (feminine)
• vardhana – increasing, causing to grow, enhancing
  adjective (masculine)
  derived from root vṛdh
  Root: vṛdh (class 1)