Final answer:
The correct synonyms for 'dread' and 'dreadful' are 'fearful' and 'scary' because these words describe fear-related emotions. The other options provided do not accurately describe a sense of fear and thus are not synonyms for dread or dreadful.
Step-by-step explanation:
The synonyms for dread and dreadful are words that convey a sense of fear or terror. From the provided options, the correct synonyms would be (1) fearful, scary, as both words are associated with being afraid or causing fear. The words provided in the options:
- Fearful - feeling afraid; showing fear or anxiety.
- Scary - frightening; causing fear.
- Peaceful - free from disturbance; tranquil.
- Relax - make or become less tense or anxious.
- Happy - feeling or showing pleasure or contentment.
- Joyful - feeling, expressing, or causing great pleasure and happiness.
- Angry - feeling or showing strong annoyance, displeasure, or hostility.
- Furious - extremely angry.
The words 'peaceful', 'relax', 'happy', 'joyful', 'angry', and 'furious' are not synonyms for 'dread' or 'dreadful' because they do not describe a fear-related emotion.