Overindulges is a term commonly used to describe excessive consumption of something. However, there are several synonyms available to add variety to your writing. If you want to describe excessive eating or drinking, you can use words like gorge, binging, or gluttony. Similarly, overdoing something or engaging in excessive behavior can be described using terms like overboard, extravagance, or excess. Apart from these, words like indulge, immerse, or engross can also be used to represent the act of being engrossed in something. Whatever the context may be, using synonyms for overindulges can help elevate your writing style and make it more engaging.