矢鱈

Etymology
Probably a shortening of, a type of gagaku rhythm that features fast repeated double-time and triple-time passages which shift abruptly.

The kanji are an example of,  perhaps chosen also for the random juxtaposition of  +.

First cited to a text from 1667.

Adjective

 * 1)  random

Adverb

 * 1)  randomly, rashly, thoughtlessly, absurdly, indiscriminately

Usage notes
As an adverb, may appear bare, with the adverbial particle, or with the adverbial particle.