Across
- 1. common to everyone or available everywhere
- 6. to show what was not seen or known before
- 7. to make someone believe something is true or necessary
- 9. an important topic or problem
- 10. the most essential
Down
- 2. to make something stronger
- 3. clear and certain
- 4. one who is well acquainted with someone or something
- 5. in addition
- 8. make sure that something is true or definite