Idioms with SLEEP

sleep on it
to wait before making a decision
Let me sleep on it and give you an answer tomorrow.

sleep like a log
to sleep very well
After a long day at work, I slept like a log last night.

not sleep a wink
to not sleep at all
I couldn’t sleep a wink last night with all that noise.

lose sleep over something
to worry about something
It’s just a game. I wouldn’t lose any sleep over it.

put something to sleep
to kill a sick or injured animal so that it does not suffer any more
We had to put our dog to sleep last week.