महाभारतः mahābhārataḥ - book-6, chapter-92, verse-40

आपतन्तं तु निस्त्रिंशं युद्धमार्गविशारदः ।
लाघवाद्व्यंसयामास सौभद्रः परवीरहा ॥४०॥

40. āpatantaṁ tu nistriṁśaṁ yuddhamārgaviśāradaḥ ,
lāghavādvyaṁsayāmāsa saubhadraḥ paravīrahā.

40. āpatantam tu nistriṃśam yuddhamārgaviśāradaḥ
lāghavāt vyaṃsayāmāsa saubhadraḥ paravīrahā

40. tu yuddhamārgaviśāradaḥ paravīrahā saubhadraḥ
lāghavāt āpatantam nistriṃśam vyaṃsayāmāsa

40. But the son of Subhadrā (Abhimanyu), who was skilled in the ways of battle and a destroyer of enemy heroes, skillfully averted the incoming sword with agility.

Words meanings summery:

• आपतन्तम् (āpatantam) - the incoming (sword) (falling, approaching, coming)

• तु (tu) - but, indeed, yet

• निस्त्रिंशम् (nistriṁśam) - sword

• युद्धमार्गविशारदः (yuddhamārgaviśāradaḥ) - skilled in the ways of battle, expert in the path of warfare

• लाघवात् (lāghavāt) - from lightness, with dexterity, due to agility

• व्यंसयामास (vyaṁsayāmāsa) - he caused to be frustrated, he averted, he baffled

• सौभद्रः (saubhadraḥ) - Abhimanyu (the son of Subhadrā)

• परवीरहा (paravīrahā) - destroyer of enemy heroes

Words meanings and morphology

आपतन्तम् (āpatantam) - the incoming (sword) (falling, approaching, coming)

(adjective)

Accusative, masculine, singular of āpatant

āpatant - falling, coming, approaching, descending

Present Active Participle

derived from root pat (to fall) with prefix ā

Prefix: ā

Root: pat (class 1)

तु (tu) - but, indeed, yet

(indeclinable)

conjunction

निस्त्रिंशम् (nistriṁśam) - sword

(noun)

Accusative, masculine, singular of nistriṃśa

nistriṁśa - sword, scimitar

Often etymologized as 'not needing three cuts' or 'cutting in twenty-nine ways', but primarily means sword.

युद्धमार्गविशारदः (yuddhamārgaviśāradaḥ) - skilled in the ways of battle, expert in the path of warfare

(adjective)

Nominative, masculine, singular of yuddhamārgaviśārada

yuddhamārgaviśārada - skilled in the ways of battle, expert in the rules of warfare

Compound type : tatpurusha (yuddhamārga+viśārada)

• yuddhamārga – path/way of battle, rules of war
  noun (masculine)
• viśārada – skilled, expert, clever
  adjective (masculine)
  Prefix: vi

लाघवात् (lāghavāt) - from lightness, with dexterity, due to agility

(noun)

Ablative, neuter, singular of lāghava

lāghava - lightness, agility, dexterity, quickness, swiftness

derived from laghu (light) + aṇ (bhāva sense)

व्यंसयामास (vyaṁsayāmāsa) - he caused to be frustrated, he averted, he baffled

(verb)

3rd person , singular, active, perfect (Lit) of vyaṃs

Causative

Periphrastic Perfect of causative root vyas (vi-as 'to throw') or vyaṃs (causative of vi-aṃs 'to fail, fall'). Here, likely from vyas.

Prefix: vi

Root: as (class 4)

सौभद्रः (saubhadraḥ) - Abhimanyu (the son of Subhadrā)

(noun)

Nominative, masculine, singular of saubhadra

saubhadra - son of Subhadrā (i.e., Abhimanyu)

patronymic from Subhadrā

परवीरहा (paravīrahā) - destroyer of enemy heroes

(adjective)

Nominative, masculine, singular of paravīrahā

paravīrahā - destroyer of enemy heroes, slayer of hostile warriors

Agent noun from root han (to kill) with prefix and compound.

Compound type : tatpurusha (para+vīra+hā)

• para – other, enemy, hostile
  adjective (masculine)
• vīra – hero, warrior, brave man
  noun (masculine)
• hā – killer, destroyer
  noun (masculine)
  short form of 'han' (killer) in compounds, from root han
  Root: han (class 2)

Note: This is an agent noun functioning as an adjective for Saubhadra.