Some frequentative verbs surviving in English and their parent verbs are listed below.
From the en.wikipedia.org
Loanwords are put into the frequentative form, if the action is such.
From the en.wikipedia.org
There are several frequentative and momentane verb categories.
From the en.wikipedia.org
In Latin, frequentative verbs show repeated or intense action.
From the en.wikipedia.org
English frequentative is no longer productive, but in some languages, such as Finnish or Lithuanian, it is.
From the en.wikipedia.org
The frequentative form can be considered a separate, but not completely independent word, called a frequentative.
From the en.wikipedia.org
More examples
A verb form that serves to express frequent repetition of an action
In grammar, a frequentative (abbreviated or) form of a word is one which indicates repeated action. The frequentative form can be considered a separate, but not completely independent word, called a frequentative. ...