Claggy is an informal term used to describe something that is sticky, heavy, and thick. There are several synonyms for this word that can be used interchangeably in different contexts. Some of the common synonyms for claggy include adhesive, gluey, gummy, tacky, viscid, and paste-like. Adhesive is often used to describe something that sticks easily to a surface, while gluey and gummy are used to describe something that is wet and sticky. Tacky is a term used to describe something that is slightly sticky and unpleasant to the touch, while viscid and paste-like are used to describe something that is thick and difficult to move. Overall, these synonyms for claggy are useful in conveying a sense of stickiness and heaviness in a wide range of situations.