Crossword clues for the word: GRETAS The word GRETAS has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for GRETAS Showing 1 to 6 of 6 results Clue(s) Activist Thunberg and actress Scacchi Actress Nissen et al. Garbo and Nissen Garbo and Scacchi Margaret's namesakes. Scacchi and Garbo