योगवासिष्ठः yogavāsiṣṭhaḥ - book-1, chapter-20, verse-10

असत्यं सत्यसंकाशमचिराद्विप्रलम्भदम् ।
स्वप्नाङ्गनासङ्गसमं यौवनं मे न रोचते ॥ १० ॥

asatyaṃ satyasaṃkāśamacirādvipralambhadam ,
svapnāṅganāsaṅgasamaṃ yauvanaṃ me na rocate 10

10. asatyam satyasaṅkāśam acirāt vipralambhadam
svapnāṅganāsaṅgasamam yauvanam me na rocate

10. yauvanam asatyam satyasaṅkāśam acirāt
vipralambhadam svapnāṅganāsaṅgasamam me na rocate

10. Youth, which is untrue but appears to be true, quickly leads to disappointment and is like the embrace of a woman in a dream; it does not appeal to me.

Words meanings summery:

• असत्यम् (asatyam) - false, untrue, unreal

• सत्यसङ्काशम् (satyasaṅkāśam) - appearing like truth, seemingly true

• अचिरात् (acirāt) - quickly, in no long time, soon

• विप्रलम्भदम् (vipralambhadam) - causing deception, bringing disappointment

• स्वप्नाङ्गनासङ्गसमम् (svapnāṅganāsaṅgasamam) - similar to the embrace of a woman in a dream

• यौवनम् (yauvanam) - youth, youthfulness

• मे (me) - to me, for me, my

• न (na) - not, no

• रोचते (rocate) - pleases, is agreeable, shines

Words meanings and morphology

असत्यम् (asatyam) - false, untrue, unreal

(adjective)

Nominative, neuter, singular of asatya

asatya - untrue, false, unreal, not good

Compound type : Nañ-tatpuruṣa (a+satya)

• a – not, un-
  indeclinable
• satya – true, real, existent; truth, reality
  adjective/noun (neuter)

Note: Predicative adjective for 'yauvanam'.

सत्यसङ्काशम् (satyasaṅkāśam) - appearing like truth, seemingly true

(adjective)

Nominative, neuter, singular of satyasaṅkāśa

satyasaṅkāśa - resembling truth, appearing true

Compound type : Tatpuruṣa (satya+saṅkāśa)

• satya – truth, reality, true
  noun/adjective (neuter)
• saṅkāśa – appearing like, resembling, similar
  adjective (masculine/feminine/neuter)
  Derived from root kāś (to shine, appear) with prefix sam
  Prefix: sam
  Root: kāś (class 1)

Note: Predicative adjective for 'yauvanam'.

अचिरात् (acirāt) - quickly, in no long time, soon

(indeclinable)

Ablative of 'acira' (not long) used adverbially.

Note: Adverb modifying 'vipralambhadam'.

विप्रलम्भदम् (vipralambhadam) - causing deception, bringing disappointment

(adjective)

Nominative, neuter, singular of vipralambhada

vipralambhada - causing deception, giving disappointment

Derived from 'vipralambha' (deception) + 'da' (giving).

Compound type : Upapada Tatpuruṣa (vipralambha+da)

• vipralambha – deception, disappointment, separation
  noun (masculine)
  From root labh (to obtain) with prefixes vi, pra
  Prefixes: vi+pra
  Root: labh (class 1)
• da – giving, granting, causing
  adjective (masculine/feminine/neuter)
  From root dā (to give)
  Root: dā (class 3)

Note: Predicative adjective for 'yauvanam'.

स्वप्नाङ्गनासङ्गसमम् (svapnāṅganāsaṅgasamam) - similar to the embrace of a woman in a dream

(adjective)

Nominative, neuter, singular of svapnāṅganāsaṅgasama

svapnāṅganāsaṅgasama - resembling the union with a woman in a dream

Compound type : Bahuvrīhi (svapna+aṅganā+saṅga+sama)

• svapna – dream, sleep
  noun (masculine)
  From root svap (to sleep)
  Root: svap (class 2)
• aṅganā – woman, female
  noun (feminine)
• saṅga – union, contact, attachment, association
  noun (masculine)
  From root sañj (to cling) with prefix sam
  Prefix: sam
  Root: sañj (class 1)
• sama – like, similar, equal, same
  adjective (masculine/feminine/neuter)

Note: Predicative adjective for 'yauvanam'.

यौवनम् (yauvanam) - youth, youthfulness

(noun)

Nominative, neuter, singular of yauvana

yauvana - youth, youthfulness, adolescence

Derived from 'yuvan' (young)

Note: Subject of the sentence.

मे (me) - to me, for me, my

(pronoun)

Dative, singular of aham

aham - I, me

Note: Indirect object, 'to me'.

न (na) - not, no

(indeclinable)

Note: Negation particle.

रोचते (rocate) - pleases, is agreeable, shines

(verb)

3rd person , singular, middle, present (laṭ) of ruc

Present tense, middle voice (ātmanepada)

Root ruc (Bhvādi, 1st class)

Root: ruc (class 1)