महाभारतः mahābhārataḥ - book-3, chapter-269, verse-6

राघवस्त्वभिनिर्याय व्यूढानीकं दशाननम् ।
बार्हस्पत्यं विधिं कृत्वा प्रत्यव्यूहन्निशाचरम् ॥६॥

6. rāghavastvabhiniryāya vyūḍhānīkaṁ daśānanam ,
bārhaspatyaṁ vidhiṁ kṛtvā pratyavyūhanniśācaram.

6. rāghavaḥ tu abhiniryāya vyūḍhānīkam daśānanam
bārhaspatyam vidhim kṛtvā pratyavyūhan niśācaram

6. Rama, however, having advanced to confront the ten-headed Ravana, whose army was already arrayed, formed his own troops into the Brāhaspatya formation and arrayed them against the night-ranger (Ravana).

Words meanings summery:

• राघवः (rāghavaḥ) - Rama (Rama, descendant of Raghu)

• तु (tu) - however (but, however, on the other hand)

• अभिनिर्याय (abhiniryāya) - having advanced to confront (having gone forth to meet, having confronted)

• व्यूढानीकम् (vyūḍhānīkam) - whose army was arrayed (referring to Ravana) (having an army arrayed, with an army in formation)

• दशाननम् (daśānanam) - Ravana (the ten-headed one) (the ten-headed one, Ravana)

• बार्हस्पत्यम् (bārhaspatyam) - the Brāhaspatya military formation (related to Bṛhaspati (Jupiter), the formation devised by Bṛhaspati)

• विधिम् (vidhim) - military formation (rule, method, system, formation)

• कृत्वा (kṛtvā) - having formed (having done, having made, having formed)

• प्रत्यव्यूहन् (pratyavyūhan) - he (Rama) counter-arrayed (they arrayed against, he counter-arrayed)

• निशाचरम् (niśācaram) - the night-ranger (Ravana) (night-ranger, demon, Rākṣasa)

Words meanings and morphology

राघवः (rāghavaḥ) - Rama (Rama, descendant of Raghu)

(proper noun)

Nominative, masculine, singular of rāghava

rāghava - descendant of Raghu, Rama

Patronmyic from Raghu.

तु (tu) - however (but, however, on the other hand)

(indeclinable)

अभिनिर्याय (abhiniryāya) - having advanced to confront (having gone forth to meet, having confronted)

(indeclinable)

Absolutive (gerund)

From prefixes 'abhi' + 'nis' + root 'yā' (to go) + 'lyaP' suffix.

Prefixes: abhi+nis

Root: yā (class 2)

व्यूढानीकम् (vyūḍhānīkam) - whose army was arrayed (referring to Ravana) (having an army arrayed, with an army in formation)

(adjective)

Accusative, masculine, singular of vyūḍhānīka

vyūḍhānīka - having an army arrayed

Bahuvrīhi compound: vyūḍha (arrayed, P.P.P. of √vyūh) + anīka (army).

Compound type : bahuvrīhi (vyūḍha+anīka)

• vyūḍha – arrayed, arranged
  adjective (masculine)
  Past Passive Participle
  From prefix 'vi' + root 'ūh' (to arrange).
  Prefix: vi
  Root: ūh (class 1)
• anīka – army, host, array
  noun (neuter)

Note: Agrees with daśānanam.

दशाननम् (daśānanam) - Ravana (the ten-headed one) (the ten-headed one, Ravana)

(proper noun)

Accusative, masculine, singular of daśānana

daśānana - ten-headed, Ravana

Bahuvrīhi compound: daśa (ten) + ānana (face/head).

Compound type : bahuvrīhi (daśa+ānana)

• daśa – ten
  numeral
• ānana – face, mouth, head
  noun (neuter)

बार्हस्पत्यम् (bārhaspatyam) - the Brāhaspatya military formation (related to Bṛhaspati (Jupiter), the formation devised by Bṛhaspati)

(adjective)

Accusative, masculine, singular of bārhaspatya

bārhaspatya - related to Bṛhaspati, (a specific) military array

Derived from Bṛhaspati with 'ya' suffix.

Note: Agrees with vidhim.

विधिम् (vidhim) - military formation (rule, method, system, formation)

(noun)

Accusative, masculine, singular of vidhi

vidhi - rule, method, injunction, formation, destiny

From prefix 'vi' + root 'dhā' (to place, arrange).

Prefix: vi

Root: dhā (class 3)

कृत्वा (kṛtvā) - having formed (having done, having made, having formed)

(indeclinable)

Absolutive (gerund)

From root 'kṛ' (to do, make) + 'ktvā' suffix.

Root: kṛ (class 8)

प्रत्यव्यूहन् (pratyavyūhan) - he (Rama) counter-arrayed (they arrayed against, he counter-arrayed)

(verb)

3rd person , singular, active, imperfect (laṅ) of pratyavyūhan

Imperfect tense, 3rd person plural (used contextually as singular)

From prefixes 'prati' + 'vi' + root 'ūh' (to arrange). 'a' augment indicates Imperfect. Grammatically 3rd person plural active, but contextually refers to Rama's action as the commander.

Prefixes: prati+vi

Root: ūh (class 1)

निशाचरम् (niśācaram) - the night-ranger (Ravana) (night-ranger, demon, Rākṣasa)

(noun)

Accusative, masculine, singular of niśācara

niśācara - night-ranger, demon

Tatpuruṣa compound: niśā (night) + cara (mover).

Compound type : tatpuruṣa (niśā+cara)

• niśā – night
  noun (feminine)
• cara – moving, going, ranger
  noun/adjective (masculine)
  From root 'car' (to move).
  Root: car (class 1)