महाभारतः mahābhārataḥ - book-14, chapter-90, verse-18

तत्र वेदविदो राजंश्चक्रुः कर्माणि याजकाः ।
परिक्रमन्तः शास्त्रज्ञा विधिवत्साधुशिक्षिताः ॥१८॥

18. tatra vedavido rājaṁścakruḥ karmāṇi yājakāḥ ,
parikramantaḥ śāstrajñā vidhivatsādhuśikṣitāḥ.

18. tatra vedavidaḥ rājan cakruḥ karmāṇi yājakāḥ
parikramantaḥ śāstrajñāḥ vidhivat sādhuśikṣitāḥ

18. rājan tatra vedavidaḥ śāstrajñāḥ sādhuśikṣitāḥ
yājakāḥ parikramantaḥ vidhivat karmāṇi cakruḥ

18. O king, the officiating priests, who were well-versed in the Vedas, knowledgeable in the scriptures, and thoroughly trained, performed the rituals there in accordance with the prescribed rules, moving about.

Words meanings summery:

• तत्र (tatra) - in that ritual place (there, in that place)

• वेदविदः (vedavidaḥ) - the priests who are knowledgeable in the Vedas (knowers of the Vedas)

• राजन् (rājan) - O king

• चक्रुः (cakruḥ) - they performed, they did

• कर्माणि (karmāṇi) - the various ritual acts (actions, rituals)

• याजकाः (yājakāḥ) - officiating priests, sacrificers

• परिक्रमन्तः (parikramantaḥ) - moving around the ritual fire or arena (moving around, circumambulating, proceeding)

• शास्त्रज्ञाः (śāstrajñāḥ) - those well-versed in Vedic injunctions (knowledgeable in the scriptures, knowing the treatises)

• विधिवत् (vidhivat) - according to rule, properly, methodically

• साधुशिक्षिताः (sādhuśikṣitāḥ) - priests who were excellently instructed (well-trained, thoroughly educated)

Words meanings and morphology

तत्र (tatra) - in that ritual place (there, in that place)

(indeclinable)

वेदविदः (vedavidaḥ) - the priests who are knowledgeable in the Vedas (knowers of the Vedas)

(noun)

Nominative, masculine, plural of vedavid

vedavid - knower of the Vedas, learned in sacred knowledge

Compound type : tatpuruṣa (veda+vid)

• veda – sacred knowledge, Veda
  noun (masculine)
• vid – knowing, wise, learned
  adjective
  agent noun/adjective from root
  From root 'vid' (to know)
  Root: vid (class 2)

राजन् (rājan) - O king

(noun)

Vocative, masculine, singular of rājan

rājan - king, ruler

चक्रुः (cakruḥ) - they performed, they did

(verb)

3rd person , plural, active, perfect (liṭ) of kṛ

Root: kṛ (class 8)

कर्माणि (karmāṇi) - the various ritual acts (actions, rituals)

(noun)

Accusative, neuter, plural of karma

karma - action, deed, work, ritual

Root: kṛ

याजकाः (yājakāḥ) - officiating priests, sacrificers

(noun)

Nominative, masculine, plural of yājaka

yājaka - officiating priest, one who performs a Vedic ritual

agent noun

Derived from root yaj (to worship, sacrifice) with suffix ṇvul (aka)

Root: yaj (class 1)

परिक्रमन्तः (parikramantaḥ) - moving around the ritual fire or arena (moving around, circumambulating, proceeding)

(participle)

Nominative, masculine, plural of parikramant

parikramant - one who moves around, circumambulating

present active participle

From root kram (to step, walk) with prefix pari and suffix śatṛ

Prefix: pari

Root: kram (class 1)

शास्त्रज्ञाः (śāstrajñāḥ) - those well-versed in Vedic injunctions (knowledgeable in the scriptures, knowing the treatises)

(adjective)

Nominative, masculine, plural of śāstrajña

śāstrajña - knower of scriptures, skilled in treatises

Compound type : tatpuruṣa (śāstra+jña)

• śāstra – scripture, sacred treatise, rule, instruction
  noun (neuter)
• jña – knowing, knower of
  adjective
  agent noun/adjective from root
  From root jñā (to know)
  Root: jñā (class 9)

विधिवत् (vidhivat) - according to rule, properly, methodically

(indeclinable)

Derived from 'vidhi' (rule) with the 'vatup' suffix

साधुशिक्षिताः (sādhuśikṣitāḥ) - priests who were excellently instructed (well-trained, thoroughly educated)

(adjective)

Nominative, masculine, plural of sādhuśikṣita

sādhuśikṣita - well-trained, properly instructed, thoroughly educated

Compound type : karmadhāraya (sādhu+śikṣita)

• sādhu – good, proper, well, virtuous
  adjective
• śikṣita – trained, taught, learned
  participle
  past passive participle
  From root śikṣ (to learn, to train)
  Root: śikṣ (class 1)