Meaning of fearful

fear•ful

1. causing or apt to cause fear; frightening: a fearful apparition.
2. feeling fear, dread, apprehension, or solicitude: fearful for his life; fearful lest he commit suicide.
3. full of awe or reverence: fearful of the Lord.
4. showing or caused by fear: fearful behavior.
5. extreme in size, intensity, or badness: a fearful head cold; fearful poverty.