योगवासिष्ठः yogavāsiṣṭhaḥ - book-1, chapter-7, verse-20

हन्त नूनं विजानामि हतांस्तान्विद्धिराक्षसान् ।
नह्यस्मदादयः प्राज्ञाः संदिग्धे संप्रवृत्तयः ॥ २० ॥

hanta nūnaṃ vijānāmi hatāṃstānviddhirākṣasān ,
nahyasmadādayaḥ prājñāḥ saṃdigdhe saṃpravṛttayaḥ 20

20. hanta nūnam vijānāmi hatān tān viddhi rākṣasān na
hi asmadādayaḥ prājñāḥ saṃdigdhe saṃpravṛttayaḥ

20. Alas, I certainly know that those rākṣasas are slain. Indeed, the undertakings of wise persons like us are not carried out with uncertainty.

Words meanings summery:

• हन्त (hanta) - alas, ah, indeed, truly

• नूनम् (nūnam) - certainly, surely, indeed

• विजानामि (vijānāmi) - I know, I understand, I recognize

• हतान् (hatān) - killed, slain, struck

• तान् (tān) - them

• विद्धि (viddhi) - know, understand

• राक्षसान् (rākṣasān) - demons, rākṣasas

• न (na) - not, no

• हि (hi) - indeed, surely, for

• अस्मदादयः (asmadādayaḥ) - those like us, and others starting with us

• प्राज्ञाः (prājñāḥ) - wise, intelligent, discerning

• संदिग्धे (saṁdigdhe) - used adverbially to mean 'with uncertainty' (in doubt, in uncertainty, dubious)

• संप्रवृत्तयः (saṁpravṛttayaḥ) - undertakings, activities, actions

Words meanings and morphology

हन्त (hanta) - alas, ah, indeed, truly

(indeclinable)

नूनम् (nūnam) - certainly, surely, indeed

(indeclinable)

विजानामि (vijānāmi) - I know, I understand, I recognize

(verb)

1st person , singular, active, present (laṭ) of vijñā

Present Active

From √jñā (9th class, P) with prefix vi-

Prefix: vi

Root: jñā (class 9)

हतान् (hatān) - killed, slain, struck

(adjective)

Accusative, masculine, plural of hata

hata - killed, slain, struck, injured

Past Passive Participle

From √han (to strike, kill)

Root: han (class 2)

तान् (tān) - them

(pronoun)

Accusative, masculine, plural of tad

tad - that, he, she, it

विद्धि (viddhi) - know, understand

(verb)

2nd person , singular, active, imperative (loṭ) of vid

Imperative

From √vid (2nd class, P)

Root: vid (class 2)

राक्षसान् (rākṣasān) - demons, rākṣasas

(noun)

Accusative, masculine, plural of rākṣasa

rākṣasa - a rākṣasa, demon, evil spirit

न (na) - not, no

(indeclinable)

हि (hi) - indeed, surely, for

(indeclinable)

अस्मदादयः (asmadādayaḥ) - those like us, and others starting with us

(noun)

Nominative, masculine, plural of asmadādi

asmadādi - those like us, starting with us

Compound type : tatpurusha (asmad+ādi)

• asmad – I, we
  pronoun
• ādi – beginning, etcetera, and others
  noun (masculine)

प्राज्ञाः (prājñāḥ) - wise, intelligent, discerning

(adjective)

Nominative, masculine, plural of prājña

prājña - wise, intelligent, knowing, discerning

From pra-√jñā

Prefix: pra

Root: jñā (class 9)

संदिग्धे (saṁdigdhe) - used adverbially to mean 'with uncertainty' (in doubt, in uncertainty, dubious)

(adjective)

Locative, neuter, singular of saṃdigdha

saṁdigdha - doubtful, uncertain, dubious

Past Passive Participle

From sam-√dih (to smear, doubt)

Prefix: sam

Root: dih (class 4)

Note: Used adverbially here.

संप्रवृत्तयः (saṁpravṛttayaḥ) - undertakings, activities, actions

(noun)

Nominative, feminine, plural of saṃpravṛtti

saṁpravṛtti - undertaking, activity, proceeding

From sam-pra-√vṛt (to turn, proceed)

Prefixes: sam+pra

Root: vṛt (class 1)