Crossword clues for the word: OCTI The word OCTI has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for OCTI Showing 1 to 8 of 8 results Clue(s) Date for a Libra First day of a fall mo.? Jimmy Carter's birthday: Abbr. Prefix meaning eight (var.) Pres. Carter's birthday Sept. 30 follower Start of a fall mo. Start of the 10th mo.