Frequency: The word is one of the 3000 most common words in English.
1.
If you are ~, you are rather sad because something has not happened or because something is not as good as you had hoped.
Castle-hunters won’t be ~ with the Isle of Man...
I was ~ that Kluge was not there...
I was ~ to see the lack of coverage afforded to this event.
ADJ: oft ADJ prep, ADJ that, ADJ to-inf
2.
If you are ~ in someone, you are rather sad because they have not behaved as well as you expected them to.
You should have accepted that. I’m ~ in you.
ADJ: v-link ADJ in n