Prefix / Suffix

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Across
  1. 3. The suffix "-ist" means "one who ___ ".
  2. 4. The base word of subterranean.
  3. 6. Worthy of belief.
  4. 8. The base word of historical.
Down
  1. 1. If you are wrong you are ___ .
  2. 2. A person who gets the news.
  3. 5. It helps us remember things that happened.
  4. 6. Opposite of the base word in frightened.
  5. 7. Did you en___ this crossword?