योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-40, verse-42

चिरकालप्रत्ययतः कल्पनापरिपीवरः ।
आधिभौतिकताबोधमाधत्ते चैष बालवत् ॥ ४२ ॥

cirakālapratyayataḥ kalpanāparipīvaraḥ ,
ādhibhautikatābodhamādhatte caiṣa bālavat 42

42. cirakāla-pratyayataḥ kalpanā-paripīvaraḥ
ādhibhautikatā-bodham ādhatte ca eṣaḥ bālavat

42. eṣaḥ ca cirakāla-pratyayataḥ kalpanā-paripīvaraḥ
bālavat ādhibhautikatā-bodham ādhatte

42. And this (subtle body or mind), nourished and greatly expanded by beliefs and imaginations held over a long period, then generates the awareness of material existence, just like a child does (through imagination).

Words meanings summery:

• चिरकाल-प्रत्ययतः (cirakāla-pratyayataḥ) - due to belief/conviction of long duration, by long-standing impression

• कल्पना-परिपीवरः (kalpanā-paripīvaraḥ) - nourished/swollen by imagination, greatly expanded by conceptualization

• आधिभौतिकता-बोधम् (ādhibhautikatā-bodham) - the awareness of material existence, perception of material reality

• आधत्ते (ādhatte) - causes, produces, creates, sustains

• च (ca) - and

• एषः (eṣaḥ) - this (subtle body/mind) (this, he)

• बालवत् (bālavat) - like a child, childishly

Words meanings and morphology

चिरकाल-प्रत्ययतः (cirakāla-pratyayataḥ) - due to belief/conviction of long duration, by long-standing impression

(indeclinable)

Derived with the 'tas' suffix indicating 'from' or 'due to'.

Compound type : tatpuruṣa (cira+kāla+pratyaya)

• cira – long, lasting
  adjective
• kāla – time
  noun (masculine)
• pratyaya – belief, conviction, impression, notion
  noun (masculine)

कल्पना-परिपीवरः (kalpanā-paripīvaraḥ) - nourished/swollen by imagination, greatly expanded by conceptualization

(adjective)

Nominative, masculine, singular of kalpanā-paripīvara

kalpanā-paripīvara - nourished/swollen by imagination

Compound type : tatpuruṣa (kalpanā+paripīvara)

• kalpanā – imagination, conceptualization, supposition
  noun (feminine)
• paripīvara – greatly swollen, plump, nourished
  adjective (masculine)
  Prefix: pari
  Root: pyai

आधिभौतिकता-बोधम् (ādhibhautikatā-bodham) - the awareness of material existence, perception of material reality

(noun)

Accusative, masculine, singular of ādhibhautikatā-bodha

ādhibhautikatā-bodha - awareness of material existence

Compound type : tatpuruṣa (ādhibhautikatā+bodha)

• ādhibhautikatā – materiality, material existence, state of being related to bhūtas
  noun (feminine)
  Derived from 'ādhibhautika' with the feminine suffix 'tā'.
• bodha – awareness, perception, knowledge
  noun (masculine)
  Root: budh

आधत्ते (ādhatte) - causes, produces, creates, sustains

(verb)

3rd person , singular, middle, present indicative (laṭ) of dhā

Prefix: ā

Root: dhā (class 3)

च (ca) - and

(indeclinable)

एषः (eṣaḥ) - this (subtle body/mind) (this, he)

(pronoun)

Nominative, masculine, singular of etad

etad - this, he

बालवत् (bālavat) - like a child, childishly

(indeclinable)

Formed with the 'vat' suffix indicating comparison ('like').