महाभारतः mahābhārataḥ - book-1, chapter-49, verse-20

तं वै नृपवरं गत्वा दीक्षितं जनमेजयम् ।
वाग्भिर्मङ्गलयुक्ताभिस्तोषयिष्येऽद्य मातुल ।
यथा स यज्ञो नृपतेर्निर्वर्तिष्यति सत्तम ॥२०॥

20. taṁ vai nṛpavaraṁ gatvā dīkṣitaṁ janamejayam ,
vāgbhirmaṅgalayuktābhistoṣayiṣye'dya mātula ,
yathā sa yajño nṛpaternirvartiṣyati sattama.

20. tam vai nṛpavaram gatvā dīkṣitam
janamejayam vāgbhiḥ maṅgalayuktābhiḥ
toṣayiṣye adya mātula yathā saḥ
yajñaḥ nṛpateḥ nirvartiṣyati sattama

20. O maternal uncle, O excellent one, having gone to that best of kings, Janamejaya, who is performing the sacrifice, I will now satisfy him with auspicious words so that that sacrifice of the king will indeed cease.

Words meanings summery:

• तम् (tam) - that (him, that)

• वै (vai) - indeed (indeed, certainly)

• नृपवरम् (nṛpavaram) - excellent king (excellent king, best of kings)

• गत्वा (gatvā) - having approached (having gone)

• दीक्षितम् (dīkṣitam) - who is initiated (for the sacrifice) (initiated, consecrated)

• जनमेजयम् (janamejayam) - Janamejaya (Janamejaya (proper noun))

• वाग्भिः (vāgbhiḥ) - with words (by words, with speeches)

• मङ्गलयुक्ताभिः (maṅgalayuktābhiḥ) - auspicious (endowed with auspiciousness, auspicious)

• तोषयिष्ये (toṣayiṣye) - I will satisfy (I will please, satisfy)

• अद्य (adya) - now (today, now)

• मातुल (mātula) - O maternal uncle (Vāsuki) (O maternal uncle)

• यथा (yathā) - so that (as, so that)

• सः (saḥ) - that (that, he)

• यज्ञः (yajñaḥ) - sacrifice

• नृपतेः (nṛpateḥ) - of the king

• निर्वर्तिष्यति (nirvartiṣyati) - will cease (will be completed, will cease, will turn out)

• सत्तम (sattama) - O excellent one (O best of good men, O most excellent)

Words meanings and morphology

तम् (tam) - that (him, that)

(pronoun)

Accusative, masculine, singular of tad

tad - that, this, he, she, it

वै (vai) - indeed (indeed, certainly)

(indeclinable)

नृपवरम् (nṛpavaram) - excellent king (excellent king, best of kings)

(compound)

Compound type : tatpuruṣa (nṛpa+vara)

• nṛpa – king, monarch (lit. protector of men)
  noun (masculine)
• vara – best, excellent, superior, boon, wish
  adjective (masculine)

गत्वा (gatvā) - having approached (having gone)

(verb)

Root: gam (class 1)

दीक्षितम् (dīkṣitam) - who is initiated (for the sacrifice) (initiated, consecrated)

(participle)

Accusative, masculine, singular of dīkṣita

dīkṣita - initiated, consecrated, prepared for a sacrifice

past passive participle

Root: dīkṣ (class 1)

Note: Modifies Janamejaya

जनमेजयम् (janamejayam) - Janamejaya (Janamejaya (proper noun))

(noun)

Accusative, masculine, singular of janamejaya

janamejaya - Janamejaya (name of a king, son of Parikṣit)

वाग्भिः (vāgbhiḥ) - with words (by words, with speeches)

(noun)

Instrumental, feminine, plural of vāc

vāc - speech, word, voice, language

मङ्गलयुक्ताभिः (maṅgalayuktābhiḥ) - auspicious (endowed with auspiciousness, auspicious)

(adjective)

Instrumental, feminine, plural of maṅgalayukta

maṅgalayukta - endowed with auspiciousness, auspicious, blessed

Compound type : tatpuruṣa (maṅgala+yukta)

• maṅgala – auspiciousness, welfare, good fortune, blessing
  noun (neuter)
• yukta – joined, endowed, connected, proper
  participle (masculine)
  past passive participle
  From √yuj
  Root: yuj (class 7)

Note: Modifies vāgbhiḥ

तोषयिष्ये (toṣayiṣye) - I will satisfy (I will please, satisfy)

(verb)

1st person , singular, middle, future (lṛṭ) of tuṣ

Root: tuṣ (class 4)

अद्य (adya) - now (today, now)

(indeclinable)

मातुल (mātula) - O maternal uncle (Vāsuki) (O maternal uncle)

(noun)

Vocative, masculine, singular of mātula

mātula - maternal uncle

यथा (yathā) - so that (as, so that)

(indeclinable)

सः (saḥ) - that (that, he)

(pronoun)

Nominative, masculine, singular of tad

tad - that, this, he, she, it

यज्ञः (yajñaḥ) - sacrifice

(noun)

Nominative, masculine, singular of yajña

yajña - sacrifice, ritual, worship

action noun

From √yaj

Root: yaj (class 1)

नृपतेः (nṛpateḥ) - of the king

(noun)

Genitive, masculine, singular of nṛpati

nṛpati - king, lord of men

निर्वर्तिष्यति (nirvartiṣyati) - will cease (will be completed, will cease, will turn out)

(verb)

3rd person , singular, active, future (lṛṭ) of vṛt

Prefix: nir

Root: vṛt (class 1)

सत्तम (sattama) - O excellent one (O best of good men, O most excellent)

(adjective)

Vocative, masculine, singular of sattama

sattama - best, most excellent, most virtuous

superlative suffix tamap

Superlative of 'sat' (good, existing)