महाभारतः mahābhārataḥ - book-11, chapter-16, verse-26

पाञ्चालानां कुरूणां च विनाशं मधुसूदन ।
पञ्चानामिव भूतानां नाहं वधमचिन्तयम् ॥२६॥

26. pāñcālānāṁ kurūṇāṁ ca vināśaṁ madhusūdana ,
pañcānāmiva bhūtānāṁ nāhaṁ vadhamacintayam.

26. pāñcālānām kurūṇām ca vināśam madhusūdana
pañcānām iva bhūtānām na aham vadham acintayam

26. madhusūdana,
aham pāñcālānām kurūṇām ca vināśam pañcānām bhūtānām iva vadham na acintayam

26. O Madhusūdana, I did not anticipate the destruction of the Pāñcālas and the Kurus, any more than one would expect the annihilation of the five fundamental elements (bhūta).

Words meanings summery:

• पाञ्चालानाम् (pāñcālānām) - of the Pāñcālas

• कुरूणाम् (kurūṇām) - of the Kurus

• च (ca) - and

• विनाशम् (vināśam) - destruction, ruin

• मधुसूदन (madhusūdana) - O Krishna (an epithet of Krishna) (O slayer of Madhu)

• पञ्चानाम् (pañcānām) - of the five

• इव (iva) - like, as if

• भूतानाम् (bhūtānām) - of the fundamental elements (earth, water, fire, air, space) (of the elements, of beings)

• न (na) - not

• अहम् (aham) - I

• वधम् (vadham) - killing, slaughter

• अचिन्तयम् (acintayam) - I thought, I considered, I anticipated

Words meanings and morphology

पाञ्चालानाम् (pāñcālānām) - of the Pāñcālas

(proper noun)

Genitive, masculine, plural of pāñcāla

pāñcāla - the Pāñcālas (a people/kingdom)

कुरूणाम् (kurūṇām) - of the Kurus

(proper noun)

Genitive, masculine, plural of kuru

kuru - the Kurus (an ancient Indian tribe or dynasty)

च (ca) - and

(indeclinable)

विनाशम् (vināśam) - destruction, ruin

(noun)

Accusative, masculine, singular of vināśa

vināśa - destruction, annihilation, loss

From vi-√naś

Prefix: vi

Root: naś (class 4)

मधुसूदन (madhusūdana) - O Krishna (an epithet of Krishna) (O slayer of Madhu)

(proper noun)

Vocative, masculine, singular of madhusūdana

madhusūdana - Slayer of Madhu, an epithet of Krishna

Compound type : tatpurusha (madhu+sūdana)

• madhu – honey; a demon (Madhu)
  noun (neuter)
• sūdana – slayer, destroyer
  noun (masculine)
  Derived from the root √sūd (to kill)
  Root: sūd (class 10)

पञ्चानाम् (pañcānām) - of the five

(adjective)

Genitive, plural of pañcan

pañcan - five

इव (iva) - like, as if

(indeclinable)

भूतानाम् (bhūtānām) - of the fundamental elements (earth, water, fire, air, space) (of the elements, of beings)

(noun)

Genitive, neuter, plural of bhūta

bhūta - being, creature, element, ghost

Past Passive Participle (originally from √bhū)

Root: bhū (class 1)

न (na) - not

(indeclinable)

अहम् (aham) - I

(pronoun)

Nominative, singular of asmad

asmad - I, we

वधम् (vadham) - killing, slaughter

(noun)

Accusative, masculine, singular of vadha

vadha - killing, slaughter, striking, destruction

From √vadh

Root: vadh (class 1)

अचिन्तयम् (acintayam) - I thought, I considered, I anticipated

(verb)

1st person , singular, active, past imperfect (laṅ) of cint

Denominal from 'cit' with ṇic suffix, functioning as 10th class verb.

Root: cit (class 10)