In the doubling class, in this the difference is not merely of stem formation but also the endings are different. However, in general, the endings may be similar to the complex verbs.

Some of them are only found in the Vedic texts, however, many of them are general, so many of the readers would be able to recognize them.

Rules for the doubling class.

ṛ and ṝ both turn into i.

भृ → बिभृ
bhṛ → bi

Inflection:

The stem is made in the following ways:
As for strong forms, the root is doubled and strengthened to the medium level. And for weak forms, the root is doubled. Look at the table given below to understand further.

hu (duplicating, P, present tense)

हु Singular Dual Plural
3rd Person जुहोति
juhoti
जुहुतः
juhutaḥ
जुह्वति
juhvati
2nd Person जुहोषि
juhoṣi
जुहुथः
juhuthaḥ
जुहुथ
juhutha
1st Person जुहोमि
juhomi
जुहुवः
juhuvaḥ
जुहुमः
juhumaḥ

Given below is the difference between the class that doubled and the other complex verb class

Verb form Parasmaepada Atmanepada
Present tense -anti becomes -ati None
Ordinary present tense -an becomes -uḥ. If the verb ends in a vowel, then the strong stem is used. None
Command mood -antu becomes -atu. -hi becomes -dhi. None
Option mood. none None
Present participle. Only the weak stem is used. None

There is an exception as far as present participle is concerned, we get a strong stem by removing “i” from the third person plural in the present tense. When we talk about roots in doubling class, we get “at”.

IRREGULAR VERBS

The two irregular verbs in the Sanskrit language are “da” meaning give and Dha meaning place or put. Details regarding each is given below.
The table given below shows information regarding “da”.
“da”

Situation Verb Form
Strong stem dadā
Weak stem dad
PPP datta

Look at the sentences given below to learn the application of these words in sentences.

दिव्यं ददामि ते चक्षुः
divyaṃ dadāmi te cakṣuḥ
I give to you a divine eye.Bhagavad Gita 11.8

“Dha”.

Look at the table given below:

Situation Verb form
Strong stem dadhā
Weak stem dadh
PPP hita
End of compound dhi, dha
Command mood, 2nd sg. dhehi
Gerund (-tva) hitvā
Gerung (-ya) dhāya

देवदत्तः
devadattaḥ
“Given by God”; the name of Arjuna’s conch shell.

“Dha”.
Look at the table given below:

संधि
saṃdhi
sandhi

संहिता
saṃhitā
“set together”;
the sandhi-affected mantra portion of the Vedas