The affix kvarap comes in the sense of 'agent having such a habit etc.' after the verbs 1. i 'to go' 2. naś 'to destroy' 3. ji 'to conquer' 4. sṛ 'to flow'.,
The प् is indicatory in order to introduce the augment तुक् between the verb and the affix (VI. I. 71). Thus इ + क्वरप् = इ + त् + वर = इत्वरः, fem. इत्वरी 'a traveller'; नश्वरः, fem. नश्वरी 'transitory'; जित्वरः, fem. जित्वरी 'victorious'; सृत्वरः fem. सृत्वरी 'going, a river'.
Though the affix begins with a letter of वल् pratyahara, and ought to have taken the intermediate इट् 7.2.35 yet it is prohibited by 7.2.8.,