The term 'out of sync' can be defined as being out of step or not in harmony with something else. The crossword solutions for this term are OFF (3 letters) and ATCROSSPURPOSES (15 letters). OFF is a word that means not on, not functioning, or not in operation. ATCROSSPURPOSES is a phrase that means to use something for a different purpose than it was originally intended. Together, these two solutions suggest that something is not working properly or is being used for a purpose other than its original one.