The phrase "hold in leash" means to control or restrain someone or something. Synonyms for this expression include "rein in," "keep in check," "curb," "tame," "subdue," "govern," "manage," "regulate," "moderate," and "control." These synonyms imply the idea of bringing something under control, either by force or persuasion. It is essential to know the various synonyms of "hold in leash" as they provide context to one's writing and make it more engaging. One can use these synonyms to create better sentences and express themselves more clearly, efficiently and effectively in writing.