वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-6, chapter-99, verse-14

अकस्माच्चाभिकामो ऽसि सीतां राक्षसपुंगव ।
ऐश्वर्यस्य विनाशाय देहस्य स्वजनस्य च ॥१४॥

14. akasmāccābhikāmo'si sītāṃ rākṣasapuṃgava ,
aiśvaryasya vināśāya dehasya svajanasya ca.

14. akasmāt ca abhikāmaḥ asi sītām rākṣasapuṅgava
aiśvaryasya vināśāya dehasya svajanasya ca

14. rākṣasapuṅgava akasmāt ca sītām abhikāmaḥ asi
aiśvaryasya dehasya svajanasya ca vināśāya

14. And, O chief among the rākṣasas, you have unexpectedly become desirous of Sītā, [which will lead] to the destruction of your sovereignty (aiśvarya), your body, and your own people.

Words meanings summery:

• अकस्मात् (akasmāt) - suddenly, unexpectedly, without cause

• च (ca) - and, also

• अभिकामः (abhikāmaḥ) - desirous, lustful, longing for

• असि (asi) - you are

• सीताम् (sītām) - Sītā (accusative)

• राक्षसपुङ्गव (rākṣasapuṅgava) - O Rāvaṇa, chief of the rākṣasas (O chief of rākṣasas, O bull among rākṣasas (Rāvaṇa))

• ऐश्वर्यस्य (aiśvaryasya) - of power, of sovereignty, of dominion, of prosperity

• विनाशाय (vināśāya) - for destruction, for ruin

• देहस्य (dehasya) - of the body

• स्वजनस्य (svajanasya) - of one's own people, of one's relatives

• च (ca) - and, also

Words meanings and morphology

अकस्मात् (akasmāt) - suddenly, unexpectedly, without cause

(indeclinable)

From 'a-kasma' (without what cause) with ablative suffix -t

च (ca) - and, also

(indeclinable)

अभिकामः (abhikāmaḥ) - desirous, lustful, longing for

(adjective)

Nominative, masculine, singular of abhikāma

abhikāma - desirous, longing, lustful

From prefix abhi + kāma (desire)

Prefix: abhi

Root: kam (class 1)

Note: Qualifies the implied subject 'you'.

असि (asi) - you are

(verb)

2nd person , singular, active, present (laṭ) of as

Present Active

2nd person singular present active of root as

Root: as (class 2)

Note: The implied subject is 'tvam' (you).

सीताम् (sītām) - Sītā (accusative)

(proper noun)

Accusative, feminine, singular of sītā

sītā - Sītā (name of Rāma's wife)

Daughter of Janaka

Note: Object of 'abhikāmaḥ'.

राक्षसपुङ्गव (rākṣasapuṅgava) - O Rāvaṇa, chief of the rākṣasas (O chief of rākṣasas, O bull among rākṣasas (Rāvaṇa))

(compound)

Compound type : ṣaṣṭhī-tatpuruṣa (rākṣasa+puṅgava)

• rākṣasa – a demon, a powerful being
  noun (masculine)
  Related to 'rakṣ' (to protect) or 'rakṣas' (harm)
  Root: rakṣ (class 1)
• puṅgava – bull, chief, excellent one
  noun (masculine)
  Denotes superiority

ऐश्वर्यस्य (aiśvaryasya) - of power, of sovereignty, of dominion, of prosperity

(noun)

Genitive, neuter, singular of aiśvarya

aiśvarya - sovereignty, dominion, power, prosperity

Abstract noun from 'īśvara' (lord)

Root: īś (class 2)

Note: Object of destruction.

विनाशाय (vināśāya) - for destruction, for ruin

(noun)

Dative, masculine, singular of vināśa

vināśa - destruction, ruin, loss

From prefix vi + root naś (to perish)

Prefix: vi

Root: naś (class 4)

Note: Expresses purpose.

देहस्य (dehasya) - of the body

(noun)

Genitive, masculine, singular of deha

deha - body, form

From root dih (to smear, to form)

Root: dih (class 4)

Note: Object of destruction.

स्वजनस्य (svajanasya) - of one's own people, of one's relatives

(compound)

Compound type : tatpuruṣa (sva+jana)

• sva – own, one's own
  pronoun
  Reflexive possessive pronoun/adjective
• jana – person, people, creature
  noun (masculine)
  From root jan (to be born)
  Root: jan (class 4)

Note: Object of destruction.

च (ca) - and, also

(indeclinable)

Note: Connects 'dehasya' and 'svajanasya'.