Across
- 2. Not showing concern or worry
- 3. Words with similar meanings
- 4. Shape consisting of three sides
- 6. Consisting of many instruments working together to create music
- 7. Ship designed to go underwater to avoid detection
- 8. Theories beyond or over scientific understanding
- 9. Time period before written records
Down
- 1. Writing after a letter ends
- 5. Not existing or real
- 6. Half of a circle