maam,im having a hard time finding the definitions of this idiomatic expressions...Based on a sentence!
1.Not in a month of sundays.
2.What you did is frowned upon.
3.When at bay,even cowards will fight.
A month of Sundays = a very long time, in fact - never.
Frowned on/upon - disapproved of.
at bay - an animal that is chased and has turned to face its chasers is "at bay" = when forced to face circumstances.
Now try putting the phrases into sentences.