Sanskrit verbs

Sanskrit verbs have a very complex inflection system for different combinations of tense, aspect, mood, number, and person. Participial forms are also extensively used.

Classification of verbs

There are two broad ways of classifying Sanskrit verbal roots. They are: Parasmaipadi (परस्मैपदी) and Atmanepadi (आत्मनेपदी). But some roots are Ubhayapadi (उभयपदी) i.e. they are conjugated as Parasmaipadi as well as Atmanepadi roots.

Ten gaṇas

Based on how the present stem is generated from the verb root, Sanskrit has ten gaṇas (गणाः) or classes of verbs divided into two broad groups: athematic and thematic. The thematic verbs are so called because an अ a, called the theme vowel, is inserted between the stem and the ending. This serves to make the thematic verbs generally more regular. Exponents used in verb conjugation include prefixes, suffixes, infixes, and reduplication. Every root has (not necessarily all distinct) zero, guṇa (गुण), and vṛddhi (वृद्धि) grades. If V is the vowel of the zero grade, the guṇa-grade vowel is traditionally thought of as a + V, and the vṛddhi-grade vowel as ā + V.

The ten classes were as follows:

Class	Example verb	Description
1	भरति bharati, "bears"	Thematic presents, accent on the root
2	अस्ति asti, "is"	Athematic root presents
3	ददाति dadāti, "gives"	Reduplicated athematic presents
4	नश्यति naśyati, "perishes"	Thematic presents in -ya-
5	सुनोति sunóti, "presses"	Athematic presents in -nó-
6	तुदति tudati, "beats"	Thematic presents, accent on the ending
7	रुणद्धि ruṇáddhi, "blocks"	Athematic presents with nasal infix -ná-
8	तनोति tanóti, "stretches"	Athematic presents in -ó- (originally -nó- added to the zero grade of roots ending in -n)
9	क्रीणाति krīṇāti, "buys"	Athematic presents in -ṇā́- (nasal infix presents of seṭ roots)
10	चोरयति coráyati, "steals"	Thematic presents in -áya-

Seṭ and aniṭ roots

Main article: Seṭ and aniṭ roots

Sanskrit roots may also be classified, independent of their gaṇa, into three groups, depending on whether they take the vowel i (इ) before certain tense markers. Since the term used for this vowel by Sanskrit grammarians is iṭ (इट्), these two groups are called seṭ (सेट्, with iṭ), veṭ (वेट्, optional iṭ), and aniṭ (अनिट्, without iṭ) respectively.

Tense systems

The verbs tenses (a very inexact application of the word, since more distinctions than simply tense are expressed) are organized into four 'systems' (as well as gerunds and infinitives, and such creatures as intensives/frequentatives, desideratives, causatives, and benedictives derived from more basic forms) based on the different stem forms (derived from verbal roots) used in conjugation. There are four tense systems:

• Present (Present, Imperfect, Imperative, Optative)
• Perfect
• Aorist
• Future (Future, Conditional)

Present system

The present system includes the present tense, the imperfect, and the optative and imperative moods, as well as some of the remnant forms of the old subjunctive. The tense stem of the present system is formed in various ways. The numbers are the native grammarians' numbers for these classes.

For athematic verbs, the present tense stem may be formed through:

• 2) No modification at all, for example अद् (ad) from अद् (ad) 'eat'.
• 3) Reduplication prefixed to the root, for example जुहु (juhu) from हु (hu) 'sacrifice'.
• 7) Infixion of na or n before the final root consonant (with appropriate sandhi changes), for example rundh or ruṇadh from rudh 'obstruct'.
• 5) Suffixation of nu (guṇa form no), for example sunu from su 'press out'.
• 8) Suffixation of u (guṇa form o), for example tanu from tan 'stretch'. For modern linguistic purposes it is better treated as a subclass of the 5th. tanu derives from tnnu, which is zero-grade for *tannu, because in the Proto-Indo-European language [m] and [n] could be vowels, which in Sanskrit (and Greek) change to [a]. Most members of the 8th class arose this way; कर् (kar) = "make", "do" was 5th class in Vedic (krnoti = "he makes"), but shifted to the 8th class in Classical Sanskrit (karoti = "he makes")
• 9) Suffixation of nā [zero-grade नी (nī) or न् (n)], for example krīṇa or krīṇī from krī 'buy'.

For thematic verbs, the present tense stem may be formed through:

• 1) Suffixation of the thematic vowel अ (a) with guṇa strengthening, for example, bháva from bhū 'be'.
• 6) Suffixation of the thematic vowel अ (a) with a shift of accent to this vowel, for example tudá from tud 'thrust'.
• 4) Suffixation of य (ya), for example दीव्य (dī́vya) from दिव् (div) 'play'.

The tenth class described by native grammarians refers to a process which is derivational in nature, and thus not a true tense-stem formation. It is formed by suffixation of ya with guṇa strengthening and lengthening of the root's last vowel, for example bhāvaya from bhū 'be'.

Perfect system

The perfect system includes only the perfect. The stem is formed with reduplication.

The perfect system also produces separate "strong" and "weak" forms of the verb — the strong form is used with the singular active, and the weak form with the rest.

Aorist system

The aorist system includes aorist proper (with past indicative meaning, e.g. abhūḥ "you were") and some of the forms of the ancient injunctive (used almost exclusively with mā in prohibitions, e.g. mā bhūḥ "don't be"). The principal distinction of the two is presence/absence of an augment – a- prefixed to the stem.

The aorist system stem actually has three different formations: the simple aorist, the reduplicating aorist (semantically related to the causative verb), and the sibilant aorist. The simple aorist is taken directly from the root stem (e.g. bhū-: a-bhū-t "he was"). The reduplicating aorist involves reduplication as well as vowel reduction of the stem. The sibilant aorist is formed with the suffixation of s to the stem.

Future system

The future system is formed with the suffixation of sya or iṣya and guṇa. It includes a conditional, formed from the future stem as the imperfect is formed from a thematic present stem. Rarely used in Classical Sanskrit, the conditional refers to hypothetical actions.

Participles

Sanskrit also makes extensive use of participles.

Past participles

Past participles are formed directly from verbal roots for most verbs (except for verbs of the tenth gaṇa, which form them from the present stem). They have a perfective sense, in that they refer to actions that are completed. They can freely substitute for finite verbs conjugated in the past sense.

Past passive participles

The past passive participle in Sanskrit is formed by adding "-tá" (Kta in Pāṇinian terms), and in some cases "na", to a root in its weakest grade when weakening is applicable (e.g. samprasāraṇa). As expected, the augment "i" is added to the root before the suffix. The resulting form is an adjective and modifies a noun either expressed or implied. The past passive participle can usually be translated by the corresponding English past passive participle: likhitaḥ śabdaḥ "the written word"; kṛtaṃ kāryam "a done deed." See below for more detail and exceptions.

Examples: bhūta from √bhū; kṛta from √kṛ; sthita from sthā (with weakening); ukta from vac (with samprasāraṇa); udita from √vad (with both samprasāraṇa and the i augment); pūrṇa from pṝ (-na in place of -ta and "irregular" root modification).

Depending on the transitivity of the root, the suffix "-tá" has two basic applications: 1. Transitive (sakarmaka) roots: when the suffix -tá is added to a transitive root such as √kṛ "to do," the resulting participle expresses the direct object (karman) of the verbal root. The agent (kartṛ) of the same action must then occur in the instrumental case (tṛtīyā vibhakti) when the speaker wishes to express it.

Example: √han (2P) (to kill)

              राक्षसो हतो रामेण (rākṣaso hato rāmeṇa) = "The demon was killed by Rāma."

Note that rakṣasa is the direct object (karman) of the verbal action expressed in √han "to kill" and the agent (kartṛ) of the same action, Rāma, occurs in the instrumental case.

2. Intransitive (akarmaka) roots: forms adjectives/participles that indicate that the nouns modified are the subjects (kartṛ) for the action of the root (dhātu). This action is frequently in the past. In other words, the participle serves as a nominalization for a simple past tense in the kartari prayoga.

Example: √sthā(1P) (to stand)

             रामो वने स्थितः (Rāmo vane sthitaḥ)  --> Rāma stood in the forest.

Past active participles

These are regularly formed by suffixing -vant to the past passive participles. They modify the subject of the verb from which they are formed.

Present participle

Unlike the past participles, the present participle is formed from the present stem of the verb, and is formed differently depending on whether the verb is parasmaipada or ãtmanepada. The present participle can never substitute for a finite verb. It is also inherently imperfective, indicating an action that is still in process at the time of the main verb.

Future participles

Future participle

Formed from the future stem just as the present participle is formed from the present stem, the future participle describes an action that has not yet happened, but that may in the future.

Gerundive

The gerundive is a future passive prescriptive participle, indicating that the word modified should or ought to be the object of the action of the participle.

Perfect participle

The perfect participle is a past active participle, but is very rarely used in classical Sanskrit.

Aorist participle

The aorist participle used in Vedic was lost in Classical Sanskrit.

Cases

Sanskrit verbs can have "seven syntactic cases (nominative, accusative, instrumental, dative, ablative, genitive, and locative), in addition to a vocative." Not all verbs use all seven forms.

Persons and number

Sanskrit verbs are conjugated in three persons (as in English): first, second, and third person.

Verbs also have three numeric forms: singular, dual, and plural. Any verb that refers to only two objects must be in the dual from.

Example

The following table is a partial listing of the major verbal forms that can be generated from a single root. Not all roots can take all forms; some roots are often confined to particular stems. The verbal forms listed here are all in the third person singular, and they can all be conjugated in three persons and three numbers.

Root: bhū-, a class I thematic verb root.
Present stem: bhava-
Passive stem: bhūya-
Future stem: bhaviṣya-

		Primary	Causative	Desiderative	Intensive
Present stem	Present	bhavati bhavate	bhāvayati bhāvayate	bubhūṣati	bobhoti / bobhavīti bobhūyate
	Imperfect	abhavat abhavata	abhāvayat abhāvayata	abubhūṣat	abobhot abobhūyata
	Imperative	bhavatu bhavatām	bhāvayatu bhāvayatām	bubhūṣatu	bobhotu / bobhavītu bobhūyatām
	Optative	bhavet bhaveta	bhāvayet bhāvayeta	bubhūṣet	bobhavyāt bobhūyeta
	Present participle	bhavant bhavamāna	bhāvayant bhāvayamāna	bubhūṣant	bobhavant bobhūyamāna
Passive	Present	bhūyate	bhāvyate	bubhūṣyate
	Imperfect	abhũyata	abhāvyata	abubhūṣyata
	Imperative	bhũyatām	bhāvyatām	bubhūṣyatām
	Optative	bhũyeta	bhāvyeta	bubhūṣyeta
	Passive participle	bhūyamāna	bhāvyamāna	bubhūṣyamāṇa
Future stem	Future	bhaviṣyati	bhāvayiṣyati bhāvayiṣyate	bubhūṣiṣyati
	Conditional	abhaviṣyat	abhāvayiṣyat	abubhūṣiṣyat
	Future participle	bhaviṣyant	bhāvayiṣyant bhāvayiṣyamāṇa	bubhūṣiṣyant
Periphrastic future		bhavitā	bhāvayitā	bubhūṣitā
Perfect		babhūva	bhāvayām āsa	bubhūṣām āsa
Aorist	Aorist	abhūt
	Benedictive / precative	bhūyāt
	Injunctive	(mā) bhūt
Causative		bhāvayati
Desiderative		bubhūṣati	bibhāvayiṣati
Intensive		bobhavīti
Past participle		bhūta bhūtavant	bhāvita bhāvitavant	bubhūṣita bubhūṣitavant
Gerundive		bhavya, bhavitavya	bhāvayitavya

Taking into account the fact that the participial forms each decline in seven cases in three numbers across three genders, and the fact that the verbs each conjugate in three persons in three numbers, the primary, causative, and desiderative stems for this root when counted together have over a thousand forms.

Bibliography

• Devavāṇīpraveśikā: An Introduction to the Sanskrit Language – Robert P. Goldman – ISBN 0-944613-40-3
• A Sanskrit Grammar for Students – A. A. Macdonell – ISBN 81-246-0094-5
• Sanskrit Grammar - William Dwight Whitney - ISBN 978-81-208-0621-4
• Panini's Karaka System for Language Processing - Sudhir K Mishra - ISBN 978-93-85539-19-9
• अष्टाध्यायीसूत्रपाठः (वार्तिक-गणपाठ-धातुपाठ-लिङ्गानुशासन-उणादि-फिटसूत्र-सहितः)- सुधीर कुमार मिश्र - ISBN 978-93-85539-17-6

External links

• An online conjugation and declension engine made by INRIA - http://sanskrit.inria.fr/DICO/grammar.html#roots

More tools are available at http://sanskrit.inria.fr