Crossword clues for the word: SIGMACHI The word SIGMACHI has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for SIGMACHI Showing 1 to 4 of 4 results Clue(s) *Fraternity with a sweetheart of a song Frat founded in 1855 at Ohio's Miami University Fraternity with a sweetheart Sweetheart's brothers?