The crossword solution for the term LIKE FLIES is TIED, which is a four-letter word. TIED is an adjective that means to be connected or fastened together with a rope, string, or cord. It can also mean to be united or associated closely with something else. This phrase is often used to describe how people are connected to each other or to a particular activity. For example, one might say 'they are like flies TIED together' to describe how two people are inseparable.