वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-6, chapter-4, verse-46

नैरृतं नैरृतानां च नक्षत्रमभिपीड्यते ।
मूलं मूलवता स्पृष्टं धूप्यते धूमकेतुना ॥४६॥

46. nairṛtaṃ nairṛtānāṃ ca nakṣatramabhipīḍyate ,
mūlaṃ mūlavatā spṛṣṭaṃ dhūpyate dhūmaketunā.

46. nairṛtam nairṛtānām ca nakṣatram abhipīḍyate
mūlam mūlavatā spṛṣṭam dhūpyate dhūmaketunā

46. nairṛtānām ca nairṛtam nakṣatram abhipīḍyate
mūlam mūlavatā spṛṣṭam dhūmaketunā dhūpyate

46. The constellation of Nirṛti, which pertains to the Rākṣasas, is being severely afflicted. The Mūla constellation is touched by Ketu and is being obscured by a comet.

Words meanings summery:

• नैरृतम् (nairṛtam) - pertaining to the Rākṣasas (as Nirṛti is their deity) (belonging to Nirṛti, demoniac, southwestern)

• नैरृतानाम् (nairṛtānām) - of the Rākṣasas (of the Rākṣasas, of the demoniac beings, of those belonging to Nirṛti)

• च (ca) - and, also

• नक्षत्रम् (nakṣatram) - constellation, star, lunar mansion

• अभिपीड्यते (abhipīḍyate) - is being afflicted, is being oppressed

• मूलम् (mūlam) - the Mūla constellation (root, origin, the Mūla constellation)

• मूलवता (mūlavatā) - by Ketu (by one possessing roots, by Ketu)

• स्पृष्टम् (spṛṣṭam) - touched, contacted

• धूप्यते (dhūpyate) - is being smoked, is being obscured by smoke

• धूमकेतुना (dhūmaketunā) - by a comet, by a fiery meteor

Words meanings and morphology

नैरृतम् (nairṛtam) - pertaining to the Rākṣasas (as Nirṛti is their deity) (belonging to Nirṛti, demoniac, southwestern)

(adjective)

Nominative, neuter, singular of nairṛta

nairṛta - relating to Nirṛti, demoniac, southwestern

derived from Nirṛti

नैरृतानाम् (nairṛtānām) - of the Rākṣasas (of the Rākṣasas, of the demoniac beings, of those belonging to Nirṛti)

(noun)

Genitive, masculine, plural of nairṛta

nairṛta - relating to Nirṛti, demoniac, a Rākṣasa

च (ca) - and, also

(indeclinable)

नक्षत्रम् (nakṣatram) - constellation, star, lunar mansion

(noun)

Nominative, neuter, singular of nakṣatra

nakṣatra - a star, constellation, lunar mansion

अभिपीड्यते (abhipīḍyate) - is being afflicted, is being oppressed

(verb)

3rd person , singular, passive, present (laṭ) of pīḍ

passive voice, present tense

Prefix: abhi

Root: pīḍ (class 10)

मूलम् (mūlam) - the Mūla constellation (root, origin, the Mūla constellation)

(noun)

Nominative, neuter, singular of mūla

mūla - root, origin, foundation, the Mūla constellation

मूलवता (mūlavatā) - by Ketu (by one possessing roots, by Ketu)

(noun)

Instrumental, masculine, singular of mūlavat

mūlavat - possessing roots, originating, Ketu (as the lord of Mūla nakṣatra)

स्पृष्टम् (spṛṣṭam) - touched, contacted

(adjective)

Nominative, neuter, singular of spṛṣṭa

spṛṣṭa - touched, contacted

Past Passive Participle

Root: spṛś (class 6)

Note: modifying mūlam

धूप्यते (dhūpyate) - is being smoked, is being obscured by smoke

(verb)

3rd person , singular, passive, present (laṭ) of dhūp

passive voice, present tense

Root: dhūp (class 10)

धूमकेतुना (dhūmaketunā) - by a comet, by a fiery meteor

(noun)

Instrumental, masculine, singular of dhūmaketu

dhūmaketu - a comet, a fiery meteor

Compound type : karmadhāraya (dhūma+ketu)

• dhūma – smoke, vapor
  noun (masculine)
• ketu – banner, flag, sign, meteor, comet, the descending node of the moon (a celestial body)
  noun (masculine)