महाभारतः mahābhārataḥ - book-7, chapter-38, verse-4

अभिमन्युः कृतोत्साहः कृतोत्साहानरिंदमान् ।
रथस्थो रथिनः सर्वांस्तावकानप्यहर्षयत् ॥४॥

4. abhimanyuḥ kṛtotsāhaḥ kṛtotsāhānariṁdamān ,
rathastho rathinaḥ sarvāṁstāvakānapyaharṣayat.

4. abhimanyuḥ kṛta-utsāhaḥ kṛta-utsāhān arim-damān |
ratha-sthaḥ rathinaḥ sarvān tāvakān api aharṣayat

4. kṛta-utsāhaḥ ratha-sthaḥ abhimanyuḥ,
kṛta-utsāhān arim-damān sarvān tāvakān rathinaḥ api aharṣayat

4. Abhimanyu, filled with valor, while standing on his chariot, dismayed all your (Kaurava) charioteers, even those who were themselves enthusiastic and conquerors of foes.

Words meanings summery:

• अभिमन्युः (abhimanyuḥ) - The son of Arjuna and Subhadra (Abhimanyu (proper name))

• कृत-उत्साहः (kṛta-utsāhaḥ) - Abhimanyu, who was filled with valor (full of enthusiasm/valor, having made an effort)

• कृत-उत्साहान् (kṛta-utsāhān) - (the enemy charioteers) who were themselves valorous/enthusiastic (those who had made an effort, valorous ones)

• अरिम्-दमान् (arim-damān) - refers to the powerful enemy charioteers (subduers of enemies, conquerors of foes)

• रथ-स्थः (ratha-sthaḥ) - Abhimanyu, standing in his chariot (standing in a chariot, charioteer)

• रथिनः (rathinaḥ) - the enemy charioteers (charioteers, warriors in chariots)

• सर्वान् (sarvān) - all of them (the charioteers) (all, every)

• तावकान् (tāvakān) - (Dhṛtarāṣṭra's) Kaurava men (your men, those belonging to you)

• अपि (api) - Emphasizes that even these valiant charioteers were affected. (even, also, too)

• अहर्षयत् (aharṣayat) - Abhimanyu caused fear/dismay among the enemy. (he made agitated, he terrified, he dismayed)

Words meanings and morphology

अभिमन्युः (abhimanyuḥ) - The son of Arjuna and Subhadra (Abhimanyu (proper name))

(proper noun)

Nominative, masculine, singular of abhimanyu

abhimanyu - proper name, lit. "one who has pride/courage towards"

From `abhi` (towards) and `manyu` (spirit, mind, wrath).

Prefix: abhi

Root: man (class 4)

कृत-उत्साहः (kṛta-utsāhaḥ) - Abhimanyu, who was filled with valor (full of enthusiasm/valor, having made an effort)

(adjective)

Nominative, masculine, singular of kṛtotsāha

kṛtotsāha - having made an effort, full of enthusiasm, resolute

A bahuvrīhi compound (kṛtaḥ utsāhaḥ yena saḥ)

Compound type : bahuvrīhi (kṛta+utsāha)

• kṛta – made, done, performed
  adjective (neuter)
  Past Passive Participle
  From root 'kṛ' (to do, make)
  Root: kṛ (class 8)
• utsāha – enthusiasm, valor, energy, effort
  noun (masculine)
  From 'ud-sah' (to rise up)
  Prefix: ud
  Root: sah (class 1)

कृत-उत्साहान् (kṛta-utsāhān) - (the enemy charioteers) who were themselves valorous/enthusiastic (those who had made an effort, valorous ones)

(adjective)

Accusative, masculine, plural of kṛtotsāha

kṛtotsāha - having made an effort, full of enthusiasm, resolute

A bahuvrīhi compound (kṛtaḥ utsāhaḥ yena saḥ)

Compound type : bahuvrīhi (kṛta+utsāha)

• kṛta – made, done, performed
  adjective (neuter)
  Past Passive Participle
  From root 'kṛ' (to do, make)
  Root: kṛ (class 8)
• utsāha – enthusiasm, valor, energy, effort
  noun (masculine)
  From 'ud-sah' (to rise up)
  Prefix: ud
  Root: sah (class 1)

अरिम्-दमान् (arim-damān) - refers to the powerful enemy charioteers (subduers of enemies, conquerors of foes)

(noun)

Accusative, masculine, plural of arimdama

arimdama - subduer of enemies, conqueror of foes

Compound 'ari' (enemy) + 'dama' (subduing). Kṛdanta formation (substantivized agent noun).

Compound type : upapada tatpuruṣa (ari+dama)

• ari – enemy, foe
  noun (masculine)
• dama – taming, subduing, controlling
  noun (masculine)
  From root 'dam' (to tame, subdue)
  Root: dam (class 1)

रथ-स्थः (ratha-sthaḥ) - Abhimanyu, standing in his chariot (standing in a chariot, charioteer)

(adjective)

Nominative, masculine, singular of rathastha

rathastha - standing in a car or chariot

Compound of 'ratha' (chariot) and 'stha' (standing).

Compound type : upapada tatpuruṣa (ratha+stha)

• ratha – chariot, car
  noun (masculine)
• stha – standing, staying, situated in
  adjective (masculine)
  From root 'sthā' (to stand)
  Root: sthā (class 1)

रथिनः (rathinaḥ) - the enemy charioteers (charioteers, warriors in chariots)

(noun)

Accusative, masculine, plural of rathin

rathin - one who has a chariot, a charioteer, a warrior fighting from a chariot

Possessive suffix 'in' added to 'ratha'.

सर्वान् (sarvān) - all of them (the charioteers) (all, every)

(pronoun)

Accusative, masculine, plural of sarva

sarva - all, every, whole, complete

तावकान् (tāvakān) - (Dhṛtarāṣṭra's) Kaurava men (your men, those belonging to you)

(adjective)

Accusative, masculine, plural of tāvaka

tāvaka - yours, belonging to you, your people

Derived from 'tva' (you) with suffix 'aka'.

अपि (api) - Emphasizes that even these valiant charioteers were affected. (even, also, too)

(indeclinable)

अहर्षयत् (aharṣayat) - Abhimanyu caused fear/dismay among the enemy. (he made agitated, he terrified, he dismayed)

(verb)

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

Imperfect Active (Causative)

3rd person singular, Imperfect tense, causative stem (`harṣaya`).

Root: hṛṣ (class 1)