бог весть какой

Etymology
From + весть  +  - "God knows what". Весть is the 3rd person singular form of an archaic verb ведети to see, to know; compare ве́дать.

Adjective

 * 1) any kind of; God knows what kind of; Lord knows what kind of; some kind of
 * 2)  unprecedented, unheard-of, unimaginable
 * 1)  unprecedented, unheard-of, unimaginable
 * 1)  unprecedented, unheard-of, unimaginable
 * 1)  unprecedented, unheard-of, unimaginable
 * 1)  unprecedented, unheard-of, unimaginable
 * 1)  unprecedented, unheard-of, unimaginable