Crossword clues for the word: COMPLEX The word COMPLEX has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for COMPLEX Showing 1 to 6 of 6 results Clue(s) 12 in vitamin B12 is an example of a ___ number Cluster of apartment buildings Intricate Intricate assemblage Military-industrial ___ Psychiatrist's diagnosis