Some Common Action Words

In Hindi, infinitive = root verb + nā

So if root verb is kar then karnā is the infinitive.

करना	karnā	To do
मुस्कराना	muskarānā	To smile
हंसना	hasnā	To laugh
रोना	ronā	To cry
बजाना	bajānā	To play (musical instrument)
ताली बजाना	tālī bajānā	To clap
खडा होना	khadā honā	To stand
बैठना	baithnā	To sit
चलना	chalnā	To walk
दौडना	daudnā	To run
खाना	khānā	To eat
पीना	pīnā	To drink
पढना	padhnā	To read/study
पढाना	padhānā	To teach
लिखना	likhnā	To write
फेंकना	feknā	To throw
पकडना	pakadnā	To catch
कूदना	kūdnā	To jump
खेलना	khelnā	To play
तैरना	tairnā	To swim
नाचना	nāchnā	To dance
सोना	sonā	To sleep
पकाना	pakānā	To cook
बताना	batānā	To tell
बात करना	bāt karnā	To talk
बोलना	bolnā	To speak
देखना	dekhnā	To see
सुनना	sunnā	To hear/listen
नहाना	nahānā	To bathe
लेना	lenā	To take
देना	denā	To give
आना	ānā	To come
जाना	jānā	To go
मारना	mārnā	To hit/kill
बेचना	bechnā	To sell
खरीदना	kharīdnā	To buy