Frequency: The word is one of the 3000 most common words in English.
1.
A ~ machine, device, or method is more advanced or complex than others.
Honeybees use one of the most ~ communication systems of any insect.
...a large and ~ new British telescope.
ADJ
2.
Someone who is ~ is comfortable in social situations and knows about culture, fashion, and other matters that are considered socially important.
Claude was a charming, ~ companion...
= refined
ADJ
3.
A ~ person is intelligent and knows a lot, so that they are able to understand complicated situations.
These people are very ~ observers of the foreign policy scene.
ADJ