Dreadful (adjective)

1. Extremely unpleasant or bad.
2. Inspiring fear or dread.
3. Terrible, very bad.

Origin:

From middle english dredful, from old english drēadful, from drēadan "to dread".

Examples:

1. The weather was dreadful.
2. The news was dreadful.
3. The performance was dreadful.
4. The movie was dreadful.
5. The experience was dreadful.