Idiomatically, a Bolt From It Would Be Unexpected

This page is the CodyCross answer for the clue below from A Sweet Life, Group 1093, Puzzle 5 (Cheesecakes).

Question is: Idiomatically, a Bolt From It Would Be Unexpected

and the answer is: THEBLUE

Word Meaning:

THE — Used before a noun phrase, including a simple noun

Definitions from Wiktionary.