The crossword solutions for the term RAPID SPEED; FASTENER are CLIP. A CLIP is a device used to hold two or more objects together. It is usually made of metal or plastic and is used to secure items such as paper, fabric, or wires. Clips are often used in place of nails, screws, or other fasteners. Clips can also be used to attach items to clothing or bags. Clips are an essential tool for many tasks and are used in a variety of industries.