FASTENED TOGETHER is a term used to describe two or more objects that have been connected in some way. The crossword solution ATTACHED is an 8-letter word that can be used to describe the same concept. Attaching two or more objects together can be done with a variety of materials, such as glue, screws, nails, or tape. This process is often used to create a stronger bond between the objects than if they were simply placed next to each other.