When we want to express that there is a significant amount of something, we often use the phrase "a good/great deal of something." However, there are various synonyms for this phrase that could add some variety to our writing and speech. For instance, we could use words like "a lot of," "an abundance of," "plenty of," "a copious amount of," "a plethora of," "a substantial amount of," "a significant amount of," or "a considerable amount of." By incorporating these synonyms into our language, we can make our writing more engaging and dynamic while also expanding our vocabulary.