be all at sea(redirected from someone is all at sea about)
be all at sea
To be greatly puzzled, perplexed, or completely confused (about something or in some situation). I tried to do well in this class, but I've been all at sea since we started. Bill is all at sea because of this calculus problem. Can you help him?
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
at sea, to be/all
To be bewildered, to have lost one’s way. Presumably it reflects the idea of literally having lost one’s bearings while at sea. It was so used by Dickens and other nineteenth-century writers.
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer