Emphatic prefix attached to verbs, adding a sense of force or intensity. Derived from 掻き (kaki), it is used in a limited set of compounds, often with a colloquial or expressive feel.
See also: 掻き
to hit (a ball) with great force; to blast
to snatch away; to make off with
Derived from the prefix 掻き (kaki), with a geminate consonant shift for emphasis. The exact historical development is uncertain, but it is used in modern Japanese as an intensifier in a few set expressions.