There are several synonyms for the term "interest-based" that can be used to describe something that is driven or focused by personal motivation. These include phrases such as passion-driven, motive-centered, drive-oriented, and incentive-based. Each of these phrases conveys the idea that something is being pursued or engaged with because of a strong interest or desire. Other synonyms might include personal-interest focused, desire-driven or goal-oriented. Additionally, phrases such as preference-motivated or choice-driven can also be used to describe activities or situations that are influenced by individual interests or desires. Whatever the term used, it is clear that a strong sense of personal motivation and engagement is at the heart of any interest-based activity.