ずきん

Etymology 1
First cited to a text from 1977.

Reduced form of reduplicated adverb, which is first attested in 1919. In turn, that is the emphatic form of adverb, which is cited from 1789.

Ultimately appears to be derived from verb. Part of a cluster of related adverbs all sharing the element.

Adverb

 * 1)   throbbingly and painfully

Usage notes

 * Generally used with the adverbial particle.