Frequency: The word is one of the 3000 most common words in English.
When you are ~, you are unhappy because you keep thinking about problems that you have or about unpleasant things that might happen in the future.
He seemed very ~...
If you’re at all ~ about his progress, do discuss it with one of his teachers...
= anxious
ADJ: oft ADJ about n, ADJ that
~ly
‘You don’t have to go, you know,’ she said ~ly.
ADV: usu ADV with v