महाभारतः mahābhārataḥ - book-4, chapter-11, verse-13

एवं हि मत्स्ये न्यवसन्त पाण्डवा यथाप्रतिज्ञाभिरमोघदर्शनाः ।
अज्ञातचर्यां व्यचरन्समाहिताः समुद्रनेमीपतयोऽतिदुःखिताः ॥१३॥

13. evaṁ hi matsye nyavasanta pāṇḍavā; yathāpratijñābhiramoghadarśanāḥ ,
ajñātacaryāṁ vyacaransamāhitāḥ; samudranemīpatayo'tiduḥkhitāḥ.

13. evaṃ hi matsye nyavasanta pāṇḍavā
yathāpratijñābhiḥ amoghadarśanāḥ
ajñātacaryāṃ vyacaran samāhitāḥ
samudranemīpatayaḥ atiduḥkhitāḥ

13. Thus, the Pāṇḍavas, whose sight was unfailing and whose vows were firm, resided in the Matsya kingdom. Though they were lords of the sea-girt earth, they diligently observed their period of incognito living, enduring great sorrow.

Words meanings summery:

• एवं (evaṁ) - thus, so, in this manner

• हि (hi) - indeed, surely, for, because

• मत्स्ये (matsye) - in the Matsya kingdom (in the Matsya kingdom/country, in the fish)

• न्यवसन्त (nyavasanta) - they resided, they dwelt

• पाण्डवा (pāṇḍavā) - the Pāṇḍavas

• यथाप्रतिज्ञाभिः (yathāpratijñābhiḥ) - according to their vows, by their promises

• अमोघदर्शनाः (amoghadarśanāḥ) - whose sight/vision is unfailing; of infallible vision

• अज्ञातचर्यां (ajñātacaryāṁ) - incognito living, unknown wandering, undisclosed conduct

• व्यचरन् (vyacaran) - they observed (their incognito living) (they observed, they wandered, they conducted themselves)

• समाहिताः (samāhitāḥ) - composed, attentive, diligently, concentrated

• समुद्रनेमीपतयः (samudranemīpatayaḥ) - lords of the sea-girt (earth)

• अतिदुःखिताः (atiduḥkhitāḥ) - very distressed, exceedingly sorrowful

Words meanings and morphology

एवं (evaṁ) - thus, so, in this manner

(indeclinable)

हि (hi) - indeed, surely, for, because

(indeclinable)

मत्स्ये (matsye) - in the Matsya kingdom (in the Matsya kingdom/country, in the fish)

(noun)

Locative, masculine, singular of matsya

matsya - fish; the Matsya country or its inhabitants

न्यवसन्त (nyavasanta) - they resided, they dwelt

(verb)

3rd person , plural, active, past imperfect indicative (laṅ) of vas

Imperfect Active

Root 'vas' (to dwell), imperfect tense, 3rd person plural, with prefix 'ni'

Prefix: ni

Root: vas (class 1)

पाण्डवा (pāṇḍavā) - the Pāṇḍavas

(proper noun)

Nominative, masculine, plural of pāṇḍava

pāṇḍava - descendant of Pāṇḍu, son of Pāṇḍu

यथाप्रतिज्ञाभिः (yathāpratijñābhiḥ) - according to their vows, by their promises

(noun)

Instrumental, feminine, plural of yathāpratijñā

yathāpratijñā - according to one's promise or vow

Compound type : avyayībhāva (yathā+pratijñā)

• yathā – as, according to, just as
  indeclinable
• pratijñā – promise, vow, agreement
  noun (feminine)

अमोघदर्शनाः (amoghadarśanāḥ) - whose sight/vision is unfailing; of infallible vision

(adjective)

Nominative, masculine, plural of amoghadarśana

amoghadarśana - whose sight or vision is unfailing, infallible in perception

Compound type : bahuvrihi (amogha+darśana)

• amogha – unfailing, not fruitless, effective
  adjective (masculine)
• darśana – seeing, sight, vision, perception
  noun (neuter)
  Root: dṛś (class 1)

अज्ञातचर्यां (ajñātacaryāṁ) - incognito living, unknown wandering, undisclosed conduct

(noun)

Accusative, feminine, singular of ajñātacaryā

ajñātacaryā - unknown behavior, incognito living

Compound type : tatpurusha (ajñāta+caryā)

• ajñāta – unknown, not known
  adjective (masculine)
  Past Passive Participle
  Derived from root 'jñā' (to know) with negative prefix 'a'
  Prefix: a
  Root: jñā (class 9)
• caryā – conduct, course of action, wandering, living
  noun (feminine)
  Derived from root 'car' (to move, behave)
  Root: car (class 1)

व्यचरन् (vyacaran) - they observed (their incognito living) (they observed, they wandered, they conducted themselves)

(verb)

3rd person , plural, active, past imperfect indicative (laṅ) of car

Imperfect Active

Root 'car' (to move), imperfect tense, 3rd person plural, with prefix 'vi'

Prefix: vi

Root: car (class 1)

समाहिताः (samāhitāḥ) - composed, attentive, diligently, concentrated

(adjective)

Nominative, masculine, plural of samāhita

samāhita - placed, fixed, collected, attentive, composed, concentrated

Past Passive Participle

Derived from root 'dhā' (to place) with prefixes 'sam-ā'

Prefixes: sam+ā

Root: dhā (class 3)

समुद्रनेमीपतयः (samudranemīpatayaḥ) - lords of the sea-girt (earth)

(noun)

Nominative, masculine, plural of samudranemīpati

samudranemīpati - lord of the sea-girt earth

Compound type : tatpurusha (samudranemin+pati)

• samudranemin – sea-girt (earth)
  adjective (feminine)
• pati – lord, master, protector
  noun (masculine)

अतिदुःखिताः (atiduḥkhitāḥ) - very distressed, exceedingly sorrowful

(adjective)

Nominative, masculine, plural of atiduḥkhita

atiduḥkhita - greatly afflicted, exceedingly distressed

Compound type : prādi-samāsa (ati+duḥkhita)

• ati – exceedingly, very, beyond
  indeclinable
• duḥkhita – distressed, grieved, afflicted
  adjective (masculine)
  Past Passive Participle
  Derived from root 'duḥkh' (to suffer)
  Root: duḥkh (class 10)