योगवासिष्ठः yogavāsiṣṭhaḥ - book-1, chapter-19, verse-26

नानामनोरथमयी मिथ्याकल्पितकल्पना ।
दुःखायात्यन्तदीर्घाय बालता पेलवाशया ॥ २६ ॥

nānāmanorathamayī mithyākalpitakalpanā ,
duḥkhāyātyantadīrghāya bālatā pelavāśayā 26

26. nānāmanorathamayī mithyākalpitakalpanā
duḥkhāya atyantadīrghāya bālatā pelavāśayā

26. pelavāśayā nānāmanorathamayī mithyākalpitakalpanā bālatā atyantadīrghāya duḥkhāya (bhavati).

26. Childhood (bālatā), with its tender disposition, which is full of various desires and falsely conceived notions, leads to exceedingly prolonged suffering.

Words meanings summery:

• नानामनोरथमयी (nānāmanorathamayī) - full of various fantasies/desires, made of diverse wishes

• मिथ्याकल्पितकल्पना (mithyākalpitakalpanā) - a falsely imagined concept/idea, an illusion based on false notions

• दुःखाय (duḥkhāya) - for suffering, unto misery

• अत्यन्तदीर्घाय (atyantadīrghāya) - for exceedingly long-lasting, for very prolonged

• बालता (bālatā) - childhood, state of being a child

• पेलवाशया (pelavāśayā) - of tender disposition, with a delicate mind

Words meanings and morphology

नानामनोरथमयी (nānāmanorathamayī) - full of various fantasies/desires, made of diverse wishes

(adjective)

Nominative, feminine, singular of nānāmanorathamayī

nānāmanorathamayī - consisting of various desires, full of manifold fantasies

Compound type : Tatpurusha (nānāmanoratha+mayī)

• nānāmanoratha – various desires, diverse fantasies
  noun (masculine)
• mayī – full of, made of, consisting of (suffix)
  adjective (feminine)
  Suffix 'maya' indicating 'full of' or 'made of'.

मिथ्याकल्पितकल्पना (mithyākalpitakalpanā) - a falsely imagined concept/idea, an illusion based on false notions

(noun)

Nominative, feminine, singular of mithyākalpitakalpanā

mithyākalpitakalpanā - a falsely imagined notion, illusory conception

Compound type : Tatpurusha (mithyākalpita+kalpanā)

• mithyākalpita – falsely imagined, wrongly conceived
  adjective
  Past Passive Participle compound
• kalpanā – imagination, notion, concept, invention
  noun (feminine)

दुःखाय (duḥkhāya) - for suffering, unto misery

(noun)

Dative, neuter, singular of duḥkha

duḥkha - suffering, pain, sorrow, misery

अत्यन्तदीर्घाय (atyantadīrghāya) - for exceedingly long-lasting, for very prolonged

(adjective)

Dative, neuter, singular of atyantadīrgha

atyantadīrgha - very long, exceedingly prolonged

Compound type : Tatpurusha (atyanta+dīrgha)

• atyanta – excessive, extreme, very much
  adjective
• dīrgha – long, prolonged, extensive
  adjective

बालता (bālatā) - childhood, state of being a child

(noun)

Nominative, feminine, singular of bālatā

bālatā - childhood, infancy, childishness

पेलवाशया (pelavāśayā) - of tender disposition, with a delicate mind

(adjective)

Nominative, feminine, singular of pelavāśayā

pelavāśayā - tender-hearted, delicate-minded

Compound type : Bahuvrīhi (pelava+āśaya)

• pelava – tender, soft, delicate, weak
  adjective
• āśaya – intention, disposition, mind, heart, receptacle
  noun (masculine)