Under Wraps, Irrepressible and Bows Out

Under is a two word expression. First word is under u, n d e r. Second word is raps, w r a p s. And it basically means that something is a secret. In terms of underwraps at the expression, we often use it for really big secrets. So for example, in the headline, we're talking about who is going to play the new doctor. This was a secret for a long time, and it wll for a while, and it was under wraps.