वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-7, chapter-35, verse-39

अथातिरभसेनागाद् राहुरुत्सृज्य वासवम् ।
अनेन च स वै दृष्ट आधावञ् शैलकूटवत् ॥३९॥

39. athātirabhasenāgād rāhurutsṛjya vāsavam ,
anena ca sa vai dṛṣṭa ādhāvañ śailakūṭavat.

39. atha atirabhasena āgāt rāhuḥ utsṛjya vāsavam
anena ca sa vai dṛṣṭaḥ ādhāvan śailakūṭavat

39. atha rāhuḥ atirabhasena vāsavam utsṛjya āgāt
ca sa anena dṛṣṭaḥ vai śailakūṭavat ādhāvan

39. Then Rāhu, with great impetuosity, approached, leaving Indra behind. And he (Rāhu) was indeed seen by Hanumat as he rushed forward like a mountain peak.

Words meanings summery:

• अथ (atha) - then (then, now, moreover)

• अतिरभसेन (atirabhasena) - with great impetuosity (with great impetuosity, very quickly)

• आगात् (āgāt) - came forth, approached (came, approached)

• राहुः (rāhuḥ) - The demon Rāhu (Rāhu)

• उत्सृज्य (utsṛjya) - having left behind (having abandoned, having left)

• वासवम् (vāsavam) - Indra

• अनेन (anena) - by Hanumat (implied) (by this, by him)

• च (ca) - and (and, also)

• स (sa) - he (Rāhu) (he, that)

• वै (vai) - indeed, surely (indeed, surely (emphasizing particle))

• दृष्टः (dṛṣṭaḥ) - seen (seen, observed)

• आधावन् (ādhāvan) - rushing forward (running towards, rushing, attacking)

• शैलकूटवत् (śailakūṭavat) - like a mountain peak

Words meanings and morphology

अथ (atha) - then (then, now, moreover)

(indeclinable)

अतिरभसेन (atirabhasena) - with great impetuosity (with great impetuosity, very quickly)

(noun)

Instrumental, masculine, singular of atirabhasa

atirabhasa - great impetuosity, excessive speed

Compound type : pradi-samāsa (ati+rabhasa)

• ati – very, exceedingly
  indeclinable
• rabhasa – impetuosity, vehemence, speed
  noun (masculine)
  from √rabh + asa
  Root: rabh (class 1)

आगात् (āgāt) - came forth, approached (came, approached)

(verb)

3rd person , singular, active, imperfect past (laṅ) of āgam

Imperfect 3rd singular active

from ā-√gam, laṅ (Imperfect) with augment a

Prefix: ā

Root: gam (class 1)

राहुः (rāhuḥ) - The demon Rāhu (Rāhu)

(proper noun)

Nominative, masculine, singular of rāhu

rāhu - Rāhu (name of a demon, celestial body causing eclipses)

उत्सृज्य (utsṛjya) - having left behind (having abandoned, having left)

(indeclinable)

absolutive

from ut-√sṛj + -ya

Prefix: ut

Root: sṛj (class 6)

वासवम् (vāsavam) - Indra

(proper noun)

Accusative, masculine, singular of vāsava

vāsava - Indra (descendant of Vasu)

अनेन (anena) - by Hanumat (implied) (by this, by him)

(pronoun)

Instrumental, masculine, singular of idam

idam - this, that

Note: Refers to Hanumat from the previous verse.

च (ca) - and (and, also)

(indeclinable)

स (sa) - he (Rāhu) (he, that)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

Note: Refers to Rāhu

वै (vai) - indeed, surely (indeed, surely (emphasizing particle))

(indeclinable)

दृष्टः (dṛṣṭaḥ) - seen (seen, observed)

(adjective)

Nominative, masculine, singular of dṛṣṭa

dṛṣṭa - seen, visible

Past Passive Participle

from √dṛś + kta

Root: dṛś (class 1)

आधावन् (ādhāvan) - rushing forward (running towards, rushing, attacking)

(adjective)

Nominative, masculine, singular of ādhāvat

ādhāvat - running towards, rushing, attacking

Present Active Participle

from ā-√dhāv + śatṛ

Prefix: ā

Root: dhāv (class 1)

शैलकूटवत् (śailakūṭavat) - like a mountain peak

(indeclinable)

added suffix -vat (like, resembling)

Compound type : tatpurusha (śaila+kūṭa)

• śaila – mountain, rock
  noun (masculine)
• kūṭa – peak, summit, horn
  noun (masculine)

Note: Indeclinable used as a simile