start from scratch
"You threw me for a loop" means that you surprised me or that I wasn't expecting that. It could also mean it caught you off guard and you totally weren't expecting it.
"Start from scratch."
Get back in the saddle.
There are no English idioms that start with X
This is not an idiom. It means exactly what it looks like -- you felt the emotion that would lead you to start crying.
It means to start a journey or to leave.
to come up with new ideas
You wrap the wool twice around your finger, then put the back loop over, then loop one more, back loop over, and so on.
A Loop.
Start from scratch is an idiom it is not a part of speech. It contains a verb -start, a preposition - from and a noun - scratch
A while loop evaluates the conditional expression at the start of each iteration, whereas a do..while loop evaluates the conditional expression at the end of each iteration. Thus the do..while loop always executes at least one iteration.