many happy returns- the expression is used to wish someone happy birthday. happy medium- if you reach a happy medium you are making a compromise; reaching a conclusion or decision.
on cloud nine on top of the world
"Idioms for Being Afraid", "Idioms for Being Angry", "Idioms for Being Happy" are some examples of idioms found in the book "Found" by Margaret Peterson Haddix.
happy as a larkhappy as a clamfat and happyput on a happy facehappy-go-luckyfind a happy mediuma happy camperhappy hour
One idiom describes being in love as being "head over heels."
There are many idioms and phrases for 'on the back burner'. Some idioms and phrases for 'on the back burner' include 'pushing aside' and 'procrastinating'.
You cannot count them because new idioms are constantly being invented all over the world.
One reason why some idioms are confusing because the way the sentences are worded
Here is a link to some idioms. You can pick the "non-common" ones for yourself -- some people have heard certain idioms a lot and others have not heard the same ones, so you'll need to decide that part.
Some websites that have idioms written in them include The Free Dictionary, Cambridge Dictionary, and Phrases.com. These sites provide definitions and examples of idioms to help users understand their meanings and usage in context.
savvy, brainy
The best place is to go on your search engine and type in "list idioms" You can also look at this question for some examples.
Nostalogic