1. extremely good.

Their chocolate cake is just out of this world!

2. extremely expensive.

The price of gasoline is out of this world right now.

• stand on dignity
• stand on its head
• stand on own feet
• stand on own two feet
• stand on the threshold of
• stand on the threshold of something
• stand on your dignity
• stand on your own feet
• stand on your own two feet
• stand or fall by
• stand or fall by something
• stand out
• stand out a mile
• stand out from the crowd
• stand out like a sore thumb
• stand over
• stand over someone
• stand pat
• stand shoulder to shoulder
• stand someone in good stead
• stand someone up
• stand something on its head
• stand tall
• stand the test of time
• stand to reason