The word "coggle" is a relatively obscure term, meaning to wobble or sway unsteadily. However, there are several synonyms that can be used to convey similar meanings. Some examples include "wobble", "rock", "tilt", "sway", "wiggle", "shake", "tremble", "vibrate", and "stagger". These words all convey the idea of something unstable or unsteady, and can be used to describe a variety of physical and emotional sensations. Whether you're talking about a shaky chair or a nervous feeling, there's sure to be a synonym for "coggle" that will help you express your meaning more precisely.