वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-6, chapter-18, verse-25

यो गङ्गामनु पर्येति त्रासयन् हस्तियूथपान् ।
हस्तिनां वानराणां च पूर्ववैरमनुस्मरन् ॥२५॥

25. yo gaṅgāmanu paryeti trāsayan hastiyūthapān ,
hastināṃ vānarāṇāṃ ca pūrvavairamanusmaran.

25. yaḥ gaṅgām anu paryeti trāsayān hastiyūthapān
hastinām vānarāṇām ca pūrvavairam anusmaran

25. yaḥ hastinām vānarāṇām ca pūrvavairam anusmaran
hastiyūthapān trāsayān gaṅgām anu paryeti

25. He who roams along the Ganga, terrifying the leaders of elephant herds, recalling the ancient enmity between elephants and monkeys.

Words meanings summery:

• यः (yaḥ) - who, which

• गङ्गाम् (gaṅgām) - the Ganga (river)

• अनु (anu) - along (along, after, according to)

• पर्येति (paryeti) - roams (goes around, wanders, encompasses)

• त्रासयान् (trāsayān) - terrifying (causing terror, frightening)

• हस्तियूथपान् (hastiyūthapān) - leaders of elephant herds (elephant herd leaders)

• हस्तिनाम् (hastinām) - of elephants

• वानराणाम् (vānarāṇām) - of monkeys

• च (ca) - and (and, also)

• पूर्ववैरम् (pūrvavairam) - ancient enmity, previous hostility

• अनुस्मरन् (anusmaran) - remembering, recalling

Words meanings and morphology

यः (yaḥ) - who, which

(pronoun)

Nominative, masculine, singular of yad

yad - who, which, what

गङ्गाम् (gaṅgām) - the Ganga (river)

(proper noun)

Accusative, feminine, singular of gaṅgā

gaṅgā - the river Ganges

अनु (anu) - along (along, after, according to)

(indeclinable)

पर्येति (paryeti) - roams (goes around, wanders, encompasses)

(verb)

3rd person , singular, active, present (lat) of pari-i

From √i (to go) with prefix pari

Prefix: pari

Root: i (class 2)

त्रासयान् (trāsayān) - terrifying (causing terror, frightening)

(adjective)

Nominative, masculine, singular of trāsayat

trāsayat - causing terror, frightening, terrifying

Present Active Participle

From causative of √tras (to tremble)

Root: tras (class 4)

हस्तियूथपान् (hastiyūthapān) - leaders of elephant herds (elephant herd leaders)

(noun)

Accusative, masculine, plural of hastiyūthapa

hastiyūthapa - elephant herd leader

Compound type : tatpuruṣa (hastin+yūthapa)

• hastin – elephant
  noun (masculine)
• yūthapa – leader of a herd or troop
  noun (masculine)

हस्तिनाम् (hastinām) - of elephants

(noun)

Genitive, masculine, plural of hastin

hastin - elephant

वानराणाम् (vānarāṇām) - of monkeys

(noun)

Genitive, masculine, plural of vānara

vānara - monkey

च (ca) - and (and, also)

(indeclinable)

पूर्ववैरम् (pūrvavairam) - ancient enmity, previous hostility

(noun)

Accusative, neuter, singular of pūrvavaira

pūrvavaira - ancient enmity, previous hostility

Compound type : tatpuruṣa (pūrva+vaira)

• pūrva – former, ancient, prior, eastern
  adjective (masculine)
• vaira – enmity, hostility, hatred
  noun (neuter)

अनुस्मरन् (anusmaran) - remembering, recalling

(adjective)

Nominative, masculine, singular of anusmarat

anusmarat - remembering, recalling

Present Active Participle

From √smṛ (to remember) with prefix anu

Prefix: anu

Root: smṛ (class 1)