महाभारतः mahābhārataḥ - book-7, chapter-1, verse-20

व्यावृत्तेऽहनि राजेन्द्र पतिते जाह्नवीसुते ।
अमर्षवशमापन्नाः कालोपहतचेतसः ॥२०॥

20. vyāvṛtte'hani rājendra patite jāhnavīsute ,
amarṣavaśamāpannāḥ kālopahatacetasaḥ.

20. vyāvṛtte ahani rājendra patite jāhnavīsute
amarṣavaśam āpannāḥ kāla upahata cetasaḥ

20. rājendra vyāvṛtte ahani jāhnavīsute patite
kāla upahata cetasaḥ amarṣavaśam āpannāḥ

20. O king of kings, when the day had ended and the son of Jahnavī (Bhishma) had fallen, their minds clouded by destiny, they became overcome by indignation.

Words meanings summery:

• व्यावृत्ते (vyāvṛtte) - when the day had ended (in the ended, in the ceased, in the turned away)

• अहनि (ahani) - in the day

• राजेन्द्र (rājendra) - O king of kings (addressing Dhritarashtra) (O king of kings, O emperor)

• पतिते (patite) - (Bhishma) having fallen (in the fallen, on the fallen)

• जाह्नवीसुते (jāhnavīsute) - when the son of Jahnavī (Bhishma) (had fallen) (in the son of Jahnavī, on the son of Jahnavī)

• अमर्षवशम् (amarṣavaśam) - to the state of being subject to indignation (subjection to indignation, control of anger)

• आपन्नाः (āpannāḥ) - became subject (to indignation) (attained, reached, fallen into, overcome)

• काल (kāla) - time, destiny, death

• उपहत (upahata) - struck, injured, oppressed, afflicted

• चेतसः (cetasaḥ) - (whose) minds (of the mind, by the mind)

Words meanings and morphology

व्यावृत्ते (vyāvṛtte) - when the day had ended (in the ended, in the ceased, in the turned away)

(adjective)

Locative, masculine, singular of vyāvṛtta

vyāvṛtta - turned away, ceased, ended, averted

Past Passive Participle

derived from the root vṛt with upasargas vi and ā

Prefixes: vi+ā

Root: vṛt (class 1)

अहनि (ahani) - in the day

(noun)

Locative, neuter, singular of ahan

ahan - day, daytime

राजेन्द्र (rājendra) - O king of kings (addressing Dhritarashtra) (O king of kings, O emperor)

(proper noun)

Vocative, masculine, singular of rājendra

rājendra - chief of kings, emperor

Compound type : tatpuruṣa (rājan+indra)

• rājan – king, ruler, sovereign
  noun (masculine)
• indra – lord, chief, Indra (the deity)
  noun (masculine)

पतिते (patite) - (Bhishma) having fallen (in the fallen, on the fallen)

(adjective)

Locative, masculine, singular of patita

patita - fallen, dropped, descended, happened

Past Passive Participle

derived from the root pat

Root: pat (class 1)

जाह्नवीसुते (jāhnavīsute) - when the son of Jahnavī (Bhishma) (had fallen) (in the son of Jahnavī, on the son of Jahnavī)

(proper noun)

Locative, masculine, singular of jāhnavīsuta

jāhnavīsuta - son of Jahnavī (Bhishma)

Compound type : tatpuruṣa (jāhnavī+suta)

• jāhnavī – the river Ganga, daughter of Jahnu
  proper noun (feminine)
• suta – son, born, produced
  noun (masculine)

अमर्षवशम् (amarṣavaśam) - to the state of being subject to indignation (subjection to indignation, control of anger)

(noun)

Accusative, masculine, singular of amarṣavaśa

amarṣavaśa - control of anger, subjection to indignation

Compound type : tatpuruṣa (amarṣa+vaśa)

• amarṣa – indignation, anger, impatience, intolerance
  noun (masculine)
• vaśa – control, power, subjection, will
  noun (masculine)

आपन्नाः (āpannāḥ) - became subject (to indignation) (attained, reached, fallen into, overcome)

(adjective)

Nominative, masculine, plural of āpanna

āpanna - attained, reached, fallen into, overcome, affected

Past Passive Participle

derived from the root pad with upasarga ā

Prefix: ā

Root: pad (class 4)

काल (kāla) - time, destiny, death

(noun)

of kāla

kāla - time, destiny, death, black

Note: part of a compound

उपहत (upahata) - struck, injured, oppressed, afflicted

(adjective)

of upahata

upahata - struck, injured, oppressed, afflicted

Past Passive Participle

derived from the root han with upasarga upa

Prefix: upa

Root: han (class 2)

Note: part of a compound

चेतसः (cetasaḥ) - (whose) minds (of the mind, by the mind)

(noun)

Nominative, neuter, plural of cetas

cetas - mind, intellect, consciousness, heart

Note: part of a compound kālopahatacetasaḥ; here it's the final part, inflected as nominative plural for the whole compound