महाभारतः mahābhārataḥ - book-9, chapter-36, verse-21

यक्षा विद्याधराश्चैव राक्षसाश्चामितौजसः ।
पिशाचाश्चामितबला यत्र सिद्धाः सहस्रशः ॥२१॥

21. yakṣā vidyādharāścaiva rākṣasāścāmitaujasaḥ ,
piśācāścāmitabalā yatra siddhāḥ sahasraśaḥ.

21. यक्षाः विद्याधराः च एव राक्षसाः च अमितौजसः
पिशाचाः च अमितबलाः यत्र सिद्धाः सहस्रशः

21. यत्र यक्षाः च एव विद्याधराः च अमितौजसः
राक्षसाः च अमितबलाः पिशाचाः सहस्रशः सिद्धाः

21. Where Yakshas, Vidyadharas, and Rakshasas of immeasurable prowess, along with Pishachas of immense strength, and thousands of perfected beings (Siddhas) reside.

Words meanings summery:

• यक्षाः (यक्षाः) - Yakshas (a class of demigods, guardians of wealth)

• विद्याधराः (विद्याधराः) - Vidyadharas (a class of demigods, possessors of magical knowledge)

• च (च) - and, also

• एव (एव) - indeed, only, even, also

• राक्षसाः (राक्षसाः) - Rakshasas (demons)

• च (च) - and, also

• अमितौजसः (अमितौजसः) - of immeasurable prowess/splendor

• पिशाचाः (पिशाचाः) - Pishachas (a class of malevolent spirits/demons)

• च (च) - and, also

• अमितबलाः (अमितबलाः) - of immeasurable strength

• यत्र (यत्र) - where, in which place

• सिद्धाः (सिद्धाः) - perfected beings, Siddhas

• सहस्रशः (सहस्रशः) - by thousands, in thousands

Words meanings and morphology

यक्षाः (यक्षाः) - Yakshas (a class of demigods, guardians of wealth)

(noun)

Nominative, masculine, plural of यक्ष

यक्ष - Yaksha (a class of semi-divine beings, often associated with wealth and nature)

विद्याधराः (विद्याधराः) - Vidyadharas (a class of demigods, possessors of magical knowledge)

(noun)

Nominative, masculine, plural of विद्याधर

विद्याधर - Vidyadhara (a class of demigods, 'knowledge-bearers')

Compound type : tatpuruṣa (विद्या+धर)

• विद्या – knowledge, learning, science
  noun (feminine)
• धर – bearing, holding, possessing
  adjective/noun

च (च) - and, also

(indeclinable)

एव (एव) - indeed, only, even, also

(indeclinable)

राक्षसाः (राक्षसाः) - Rakshasas (demons)

(noun)

Nominative, masculine, plural of राक्षस

राक्षस - Rakshasa (a class of demonic beings or giants)

च (च) - and, also

(indeclinable)

अमितौजसः (अमितौजसः) - of immeasurable prowess/splendor

(adjective)

Nominative, masculine, plural of अमितौजस्

अमितौजस् - of immeasurable prowess, immense vigor

Compound type : bahuvrīhi (अमित+ओजस्)

• अमित – immeasurable, boundless, infinite
  adjective
• ओजस् – prowess, vigor, strength, energy
  noun (neuter)

पिशाचाः (पिशाचाः) - Pishachas (a class of malevolent spirits/demons)

(noun)

Nominative, masculine, plural of पिशाच

पिशाच - Pishacha (a class of goblins or demons, flesh-eaters)

च (च) - and, also

(indeclinable)

अमितबलाः (अमितबलाः) - of immeasurable strength

(adjective)

Nominative, masculine, plural of अमितबल

अमितबल - of immeasurable strength, immensely powerful

Compound type : bahuvrīhi (अमित+बल)

• अमित – immeasurable, boundless, infinite
  adjective
• बल – strength, power, force
  noun (neuter)

यत्र (यत्र) - where, in which place

(indeclinable)

सिद्धाः (सिद्धाः) - perfected beings, Siddhas

(noun)

Nominative, masculine, plural of सिद्ध

सिद्ध - perfected, accomplished, successful; a perfected being (Siddha)

Past Passive Participle

Past Passive Participle of root सिध् (sidh)

Root: सिध्

सहस्रशः (सहस्रशः) - by thousands, in thousands

(indeclinable)