An ardent enthusiast is someone who is passionate and dedicated towards a particular activity or interest. There are several synonyms for this term, including avid, devoted, fervent, zealous, passionate, and dedicated. An avid enthusiast is someone who shows a keen interest and enthusiasm towards something, while a devoted enthusiast is someone who is dedicated and loyal to their interests. A fervent enthusiast is someone who is enthusiastic and passionate in their pursuit of their interests, while a zealous enthusiast is someone who is filled with intense enthusiasm and devotion towards a particular cause or activity. Finally, a dedicated enthusiast is someone who shows complete commitment and dedication towards their passion or hobby. All of these synonyms convey a strong sense of enthusiasm and passion towards a particular pursuit.