Crossword clues for the word: EFX The word EFX has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for EFX Showing 1 to 4 of 4 results Clue(s) Das ___ (1990s hip-hop group) Das ___ (old-school hip-hop duo) Hip-hop's Das ___ Special ___ (movie enhancers)