महाभारतः mahābhārataḥ - book-12, chapter-139, verse-44

विश्वामित्रोऽहमित्येव सहसा तमुवाच सः ।
सहसाभ्यागतभयः सोद्वेगस्तेन कर्मणा ॥४४॥

44. viśvāmitro'hamityeva sahasā tamuvāca saḥ ,
sahasābhyāgatabhayaḥ sodvegastena karmaṇā.

44. viśvāmitraḥ aham iti eva sahasā tam uvāca saḥ
sahasā abhyāgatabhayaḥ sa-udvegaḥ tena karmaṇā

44. He, suddenly struck by fear and agitated by that action (karma), quickly said to him, 'I am Viśvāmitra,' indeed.

Words meanings summery:

• विश्वामित्रः (viśvāmitraḥ) - Viśvāmitra (Viśvāmitra (name of a famous sage))

• अहम् (aham) - I

• इति (iti) - thus (marking the end of a quote) (thus, so (quotation marker))

• एव (eva) - indeed, just (indeed, just, only, certainly)

• सहसा (sahasā) - suddenly (suddenly, quickly, hastily)

• तम् (tam) - him (the Chāṇḍāla) (him, that)

• उवाच (uvāca) - he spoke (he said, spoke)

• सः (saḥ) - he (Viśvāmitra) (he, that)

• सहसा (sahasā) - suddenly (overcome by fear) (suddenly, quickly, hastily)

• अभ्यागतभयः (abhyāgatabhayaḥ) - struck by fear, overcome by fear (fear-stricken, one to whom fear has come)

• स-उद्वेगः (sa-udvegaḥ) - agitated (agitated, distressed, anxious)

• तेन (tena) - by that (action/deed) (by that, by him)

• कर्मणा (karmaṇā) - by that action (karma), referring to the Chāṇḍāla's threat or Viśvāmitra's predicament. (by action, by deed, by ritual (karma))

Words meanings and morphology

विश्वामित्रः (viśvāmitraḥ) - Viśvāmitra (Viśvāmitra (name of a famous sage))

(proper noun)

Nominative, masculine, singular of viśvāmitra

viśvāmitra - Viśvāmitra (a proper name, particularly of a revered sage)

Note: The speaker's self-identification.

अहम् (aham) - I

(pronoun)

Nominative, singular of asmad

asmad - I, we

Note: First person singular pronoun.

इति (iti) - thus (marking the end of a quote) (thus, so (quotation marker))

(indeclinable)

एव (eva) - indeed, just (indeed, just, only, certainly)

(indeclinable)

Note: Emphasizes the preceding statement.

सहसा (sahasā) - suddenly (suddenly, quickly, hastily)

(indeclinable)

Note: Qualifies 'uvāca'.

तम् (tam) - him (the Chāṇḍāla) (him, that)

(pronoun)

Accusative, masculine, singular of tad

tad - that, he, she, it

Note: Refers to the Chāṇḍāla.

उवाच (uvāca) - he spoke (he said, spoke)

(verb)

3rd person , singular, active, perfect (lit) of vac

Root: vac (class 2)

Note: Past tense.

सः (saḥ) - he (Viśvāmitra) (he, that)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

Note: Refers to Viśvāmitra.

सहसा (sahasā) - suddenly (overcome by fear) (suddenly, quickly, hastily)

(indeclinable)

Note: Qualifies 'abhyāgatabhayaḥ'.

अभ्यागतभयः (abhyāgatabhayaḥ) - struck by fear, overcome by fear (fear-stricken, one to whom fear has come)

(adjective)

Nominative, masculine, singular of abhyāgatabhaya

abhyāgatabhaya - one to whom fear has come, fear-stricken

Compound type : bahuvrīhi (abhyāgata+bhaya)

• abhyāgata – approached, arrived, come
  adjective
  Past Passive Participle
  abhi + ā + root gam + kta
  Prefixes: abhi+ā
  Root: gam (class 1)
• bhaya – fear, dread
  noun (neuter)

Note: Refers to Viśvāmitra.

स-उद्वेगः (sa-udvegaḥ) - agitated (agitated, distressed, anxious)

(adjective)

Nominative, masculine, singular of saudvega

saudvega - agitated, distressed, anxious, perturbed

Compound type : bahuvrīhi (sa+udvega)

• sa – with, accompanied by
  indeclinable
• udvega – agitation, distress, anxiety
  noun (masculine)
  Prefix: ud
  Root: vij (class 6)

Note: Refers to Viśvāmitra.

तेन (tena) - by that (action/deed) (by that, by him)

(pronoun)

Instrumental, neuter, singular of tad

tad - that, he, she, it

Note: Refers to 'karmaṇā'.

कर्मणा (karmaṇā) - by that action (karma), referring to the Chāṇḍāla's threat or Viśvāmitra's predicament. (by action, by deed, by ritual (karma))

(noun)

Instrumental, neuter, singular of karma

karma - action, deed, work, ritual action (karma)

Root: kṛ (class 8)

Note: The "action" here is the Chāṇḍāla's dreadful utterance and threat, which caused Viśvāmitra's fear.