महाभारतः mahābhārataḥ - book-9, chapter-20, verse-5

तत्राश्चर्यमभूद्युद्धं सात्वतस्य परैः सह ।
यदेको वारयामास पाण्डुसेनां दुरासदाम् ॥५॥

5. tatrāścaryamabhūdyuddhaṁ sātvatasya paraiḥ saha ,
yadeko vārayāmāsa pāṇḍusenāṁ durāsadām.

5. tatra āścaryam abhūt yuddham sātvatasya paraiḥ
saha yat ekaḥ vārayāmāsa pāṇḍusenām durāsadām

5. tatra sātvatasya paraiḥ saha yuddham āścaryam
abhūt yat ekaḥ durāsadām pāṇḍusenām vārayāmāsa

5. There, an astonishing battle occurred involving Sātvata against his enemies, as he alone held back the formidable Pāṇḍava army.

Words meanings summery:

• तत्र (tatra) - there, in that place, then

• आश्चर्यम् (āścaryam) - wonder, astonishment; wonderful, astonishing

• अभूत् (abhūt) - was, happened, became

• युद्धम् (yuddham) - battle, fight, war

• सात्वतस्य (sātvatasya) - Of Sātvata, referring to Sātyaki. (of Sātvata)

• परैः (paraiḥ) - by enemies, with enemies

• सह (saha) - with, along with

• यत् (yat) - connects the preceding statement to the reason or elaboration that follows. (that, which, because)

• एकः (ekaḥ) - one, alone, unique

• वारयामास (vārayāmāsa) - stopped, restrained, prevented

• पाण्डुसेनाम् (pāṇḍusenām) - Pāṇḍava army

• दुरासदाम् (durāsadām) - difficult to approach, inaccessible, formidable

Words meanings and morphology

तत्र (tatra) - there, in that place, then

(indeclinable)

Locative adverbial derivative from tad ('that').

आश्चर्यम् (āścaryam) - wonder, astonishment; wonderful, astonishing

(noun)

Nominative, neuter, singular of āścarya

āścarya - wonder, astonishment, surprise; wonderful, astonishing, miraculous

अभूत् (abhūt) - was, happened, became

(verb)

3rd person , singular, active, aorist (luṅ) of bhū

Aorist, Active Voice

From the root bhū ('to be'). Aorist 3rd person singular, Parasmaipada.

Root: bhū (class 1)

युद्धम् (yuddham) - battle, fight, war

(noun)

Nominative, neuter, singular of yuddha

yuddha - battle, war, combat, fight

Past Passive Participle (substantivized)

Derived from the root yudh ('to fight').

Root: yudh (class 4)

सात्वतस्य (sātvatasya) - Of Sātvata, referring to Sātyaki. (of Sātvata)

(proper noun)

Genitive, masculine, singular of sātvata

sātvata - a descendant of Satvata; a name of Kṛṣṇa, Sātyaki; true, virtuous

परैः (paraiḥ) - by enemies, with enemies

(noun)

Instrumental, masculine, plural of para

para - other, hostile, enemy, supreme

सह (saha) - with, along with

(indeclinable)

यत् (yat) - connects the preceding statement to the reason or elaboration that follows. (that, which, because)

(pronoun)

Nominative, neuter, singular of yad

yad - which, what, that (relative pronoun); because, in that

एकः (ekaḥ) - one, alone, unique

(numeral)

वारयामास (vārayāmāsa) - stopped, restrained, prevented

(verb)

3rd person , singular, active, perfect (lit) of vāray

Causative of vṛ ('to cover, choose'); Perfect, Active Voice

From the causative stem of the root vṛ (class 9, 'to choose, cover'). Perfect 3rd person singular, Parasmaipada.

Root: vṛ (class 9)

पाण्डुसेनाम् (pāṇḍusenām) - Pāṇḍava army

(noun)

Accusative, feminine, singular of pāṇḍusena

pāṇḍusena - the army of the Pāṇḍavas

Compound type : tatpuruṣa (pāṇḍu+senā)

• pāṇḍu – Pāṇḍu (name of a king, father of the Pāṇḍavas); yellowish-white
  proper noun (masculine)
• senā – army, host, forces
  noun (feminine)

दुरासदाम् (durāsadām) - difficult to approach, inaccessible, formidable

(adjective)

Accusative, feminine, singular of durāsada

durāsada - difficult of access, hard to approach, formidable, impregnable

Compound type : bahuvrīhi (dus+āsada)

• dur – hard, difficult, bad
  prefix
• āsada – approaching, reaching
  noun (masculine)
  Derived from the root sad ('to sit, approach') with prefix ā-.
  Prefix: ā
  Root: sad (class 1)