1.
If you are ~ of something, you are afraid of it. (FORMAL)
Bankers were ~ of a world banking crisis...
I had often been very ~, very angry, and very isolated.
ADJ: usu v-link ADJ, oft ADJ of n, ADJ that
2.
You use ~ to emphasize how serious or bad a situation is. (FORMAL)
...the ~ consequences which might flow from unilateral military moves.
= dreadful
ADJ: ADJ n emphasis
3.
Fearful is used to emphasize that something is very bad. (INFORMAL, OLD-FASHIONED)
You gave me a ~ shock!
ADJ: ADJ n emphasis