IN' UNITE (3 letters) The crossword solutions for the term 'HARMONIZED, WITH 'IN'' are 'SYNC' and 'UNITE'. The term 'HARMONIZED' means to bring into agreement or harmony, while 'SYNC' is an abbreviation of the word 'SYNCHRONIZE', which means to cause to indicate the same time or to occur at the same rate. 'UNITE' means to join together as one. Therefore, the two solutions together suggest that when two or more things are brought together IN agreement or harmony, they become one.