Grippy is an adjective used to describe something that can firmly grip or hold on to another surface. If you're looking for synonyms for grippy, you might consider words like adhesive, sticky, tacky, or clingy. These words all imply something that can adhere to a surface and remain attached, much like how a grippy object stays attached to its intended surface. Other synonyms for grippy could include sturdy, reliable, secure, or steadfast. You might use these words to describe something that not only grips well, but also provides a sense of security and safety to its user.