What does "bend over backwards" mean?

To make a great effort; to take extraordinary care; to go to great lengths.

What is a synonym for "bend over backwards"?

Common synonyms include: be careful, be cautious, be fair, be just, do justice to, exercise care.

verb, slang

verb, slang ·Moderate ·College level

Verb

1
To make a great effort; to take extraordinary care; to go to great lengths. idiomatic, informal
"They bent over backwards to make sure everything was just right for the visit."
2
try very hard to please someone wordnet
3
Used other than figuratively or idiomatically: see bend over, backwards.

"They bent over backwards to make sure everything was just right for the visit."