योगवासिष्ठः yogavāsiṣṭhaḥ - book-1, chapter-20, verse-13

आपातमात्ररमणं सद्भावरहितान्तरम् ।
वेश्यास्त्रीसंगमप्रख्यं यौवनं मे न रोचते ॥ १३ ॥

āpātamātraramaṇaṃ sadbhāvarahitāntaram ,
veśyāstrīsaṃgamaprakhyaṃ yauvanaṃ me na rocate 13

13. āpāta-mātra-ramaṇam sad-bhāva-rahita-antaram
veśyā-strī-saṅgama-prakhyam yauvanam me na rocate

13. yauvanam āpāta-mātra-ramaṇam sad-bhāva-rahita-antaram
veśyā-strī-saṅgama-prakhyam me na rocate

13. Youth (yauvana), charming only at first glance, devoid of inner sincerity, and comparable to an encounter with a courtesan, does not appeal to me.

Words meanings summery:

• आपात-मात्र-रमणम् (āpāta-mātra-ramaṇam) - charming only at first sight; delightful only on superficial contact

• सद्-भाव-रहित-अन्तरम् (sad-bhāva-rahita-antaram) - devoid of inner sincerity; lacking true essence within

• वेश्या-स्त्री-सङ्गम-प्रख्यम् (veśyā-strī-saṅgama-prakhyam) - resembling association with a courtesan; comparable to union with a prostitute

• यौवनम् (yauvanam) - the state of being young, personified or generalized (youth; youthfulness)

• मे (me) - to me; for me

• न (na) - not; no

• रोचते (rocate) - pleases; shines; appears good

Words meanings and morphology

आपात-मात्र-रमणम् (āpāta-mātra-ramaṇam) - charming only at first sight; delightful only on superficial contact

(adjective)

Nominative, neuter, singular of āpāta-mātra-ramaṇa

āpāta-mātra-ramaṇa - agreeable merely at first appearance; fleetingly pleasant

From āpāta (first impression) + mātra (only) + ramaṇa (charming).

Compound type : tatpuruṣa (āpāta+mātra+ramaṇa)

• āpāta – descent; fall; sudden appearance; first impression
  noun (masculine)
  From ā- √pat (to fall)
  Prefix: ā
  Root: pat (class 1)
• mātra – measure; extent; only; merely
  adjective (neuter)
• ramaṇa – pleasing; charming; delighting
  adjective (neuter)
  From √ram (to delight)
  Root: ram (class 1)

Note: Referring to yauvanam.

सद्-भाव-रहित-अन्तरम् (sad-bhāva-rahita-antaram) - devoid of inner sincerity; lacking true essence within

(adjective)

Nominative, neuter, singular of sad-bhāva-rahita-antara

sad-bhāva-rahita-antara - lacking inner good qualities; empty of true feelings inside

From sat-bhāva (true nature/sincerity) + rahita (devoid of) + antara (inside/inner part).

Compound type : tatpuruṣa (sat-bhāva+rahita+antara)

• sat-bhāva – true nature; sincerity; good disposition
  noun (masculine)
  Karmadhāraya compound
• rahita – devoid of; free from; lacking
  adjective (neuter)
  Past Passive Participle
  From √rah (to abandon)
  Root: rah (class 1)
• antara – inside; inner part; interval; other
  noun (neuter)

Note: Referring to yauvanam.

वेश्या-स्त्री-सङ्गम-प्रख्यम् (veśyā-strī-saṅgama-prakhyam) - resembling association with a courtesan; comparable to union with a prostitute

(adjective)

Nominative, neuter, singular of veśyā-strī-saṅgama-prakhya

veśyā-strī-saṅgama-prakhya - similar to the company of a prostitute; likened to an encounter with a courtesan

From veśyā-strī (prostitute woman) + saṅgama (union/association) + prakhya (resembling).

Compound type : tatpuruṣa (veśyā-strī+saṅgama+prakhya)

• veśyā-strī – prostitute woman; courtesan
  noun (feminine)
  Karmadhāraya compound, 'prostitute-woman'
• saṅgama – union; association; intercourse; meeting
  noun (masculine)
  From sam- √gam (to go together)
  Prefix: sam
  Root: gam (class 1)
• prakhya – resembling; like; similar
  adjective (neuter)
  From pra- √khyā (to be known, to appear)
  Prefix: pra
  Root: khyā (class 2)

Note: Referring to yauvanam.

यौवनम् (yauvanam) - the state of being young, personified or generalized (youth; youthfulness)

(noun)

Nominative, neuter, singular of yauvana

yauvana - youth; youthfulness; prime of life

Derivative of yuvan (young)

Note: Subject of the sentence.

मे (me) - to me; for me

(pronoun)

Dative, singular of asmad

asmad - I; me

First person pronoun

Note: Dative case with rocate.

न (na) - not; no

(indeclinable)

Note: Negating particle.

रोचते (rocate) - pleases; shines; appears good

(verb)

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

Root: ruc (class 1)

Note: The subject (yauvanam) is neuter singular, hence 3rd person singular verb.