महाभारतः mahābhārataḥ - book-3, chapter-83, verse-66

लोकपालाश्च साध्याश्च नैरृताः पितरस्तथा ।
सनत्कुमारप्रमुखास्तथैव परमर्षयः ॥६६॥

66. lokapālāśca sādhyāśca nairṛtāḥ pitarastathā ,
sanatkumārapramukhāstathaiva paramarṣayaḥ.

66. lokapālāḥ ca sādhyāḥ ca nairṛtāḥ pitaraḥ tathā
sanatkumārapramukhāḥ tathā eva paramarṣayaḥ

66. The world-guardians (lokapālas), the Sādhyas, the Nairṛtas, the ancestors (pitṛs), as well as the great sages (paramarṣis) led by Sanatkumāra, are also present.

Words meanings summery:

• लोकपालाः (lokapālāḥ) - the protectors of the worlds, world-guardians

• च (ca) - and, also

• साध्याः (sādhyāḥ) - the Sādhyas (a class of celestial beings)

• च (ca) - and, also

• नैरृताः (nairṛtāḥ) - the Nairṛtas (demi-gods associated with Nirṛti, often identified with Rākṣasas)

• पितरः (pitaraḥ) - ancestors, forefathers, the Pitṛs

• तथा (tathā) - likewise, thus, and also

• सनत्कुमारप्रमुखाः (sanatkumārapramukhāḥ) - those led by Sanatkumāra, Sanatkumāra and the others

• तथा (tathā) - likewise, so, thus

• एव (eva) - Emphasizes "tathā", making it "and also". (indeed, only, just, also)

• परमर्षयः (paramarṣayaḥ) - the great sages, supreme seers

Words meanings and morphology

लोकपालाः (lokapālāḥ) - the protectors of the worlds, world-guardians

(noun)

Nominative, masculine, plural of lokapāla

lokapāla - protector of the world, guardian deity of a direction (e.g., Indra, Yama, Varuṇa, Kubera)

Compound type : tatpuruṣa (loka+pāla)

• loka – world, realm, people
  noun (masculine)
  Root: lok (class 1)
• pāla – protector, guardian, preserver
  noun (masculine)
  Derived from root pā (to protect).
  Root: pā (class 2)

च (ca) - and, also

(indeclinable)

साध्याः (sādhyāḥ) - the Sādhyas (a class of celestial beings)

(noun)

Nominative, masculine, plural of sādhya

sādhya - to be accomplished, practicable; a class of celestial beings or demi-gods

gerundive/potential participle

Derived from root sādh (to accomplish).

Root: sādh (class 5)

Note: In this context, it refers to a specific group of divine beings.

च (ca) - and, also

(indeclinable)

नैरृताः (nairṛtāḥ) - the Nairṛtas (demi-gods associated with Nirṛti, often identified with Rākṣasas)

(noun)

Nominative, masculine, plural of nairṛta

nairṛta - belonging to Nirṛti; a deity or demon associated with Nirṛti, a class of demi-gods, Rākṣasas

Derived from Nirṛti (a Vedic deity representing dissolution/calamity) with -a suffix indicating relation.

पितरः (pitaraḥ) - ancestors, forefathers, the Pitṛs

(noun)

Nominative, masculine, plural of pitṛ

pitṛ - father; ancestors, forefathers, the Pitṛs (manes)

Note: Refers to the collective ancestors or a class of divine beings.

तथा (tathā) - likewise, thus, and also

(indeclinable)

Adverbial formation from pronoun base tad.

Note: Connects 'Pitaraḥ' to the previous list.

सनत्कुमारप्रमुखाः (sanatkumārapramukhāḥ) - those led by Sanatkumāra, Sanatkumāra and the others

(adjective)

Nominative, masculine, plural of sanatkumārapramukha

sanatkumārapramukha - headed by Sanatkumāra, Sanatkumāra and others

Compound type : bahuvrīhi (sanatkumāra+pramukha)

• sanatkumāra – Sanatkumāra (one of the mind-born sons of Brahmā, a great sage)
  proper noun (masculine)
• pramukha – chief, principal, foremost; preceded by, led by
  adjective (masculine)
  Prefix: pra

Note: Adjective for paramarṣayaḥ.

तथा (tathā) - likewise, so, thus

(indeclinable)

Adverbial formation from pronoun base tad.

Note: Part of the compound `tathaiva`.

एव (eva) - Emphasizes "tathā", making it "and also". (indeed, only, just, also)

(indeclinable)

Note: Part of the compound `tathaiva`.

परमर्षयः (paramarṣayaḥ) - the great sages, supreme seers

(noun)

Nominative, masculine, plural of paramarṣi

paramarṣi - a great sage, a supreme seer

Compound type : karmadhāraya (parama+ṛṣi)

• parama – supreme, highest, ultimate, greatest
  adjective (masculine)
• ṛṣi – sage, seer, inspired poet
  noun (masculine)
  Root: ṛṣ (class 1)