Every bit is a phrase that is commonly used to denote the completeness or entirety of something. However, if you wish to add some variety to your vocabulary and avoid overusing this phrase, there are several synonyms that you can use. Terms such as - wholly, entirely, completely, altogether, totally, thoroughly, utterly, and fully - can all be used in place of every bit. Each of these synonyms can bring a slightly different tone and emphasis to your sentences, depending on the context, making your writing more engaging and varied. Additionally, using diverse synonyms helps keep your writing style fresh and expressive.