The phrase "numerous testimonials" means that there are many statements or written accounts from people who have shared their positive experiences or opinions about something. Full definition
I had already read numerous testimonials about the wonders of a plant - based diet. (mindbodygreen.com)
There's plenty of research linking gluten sensitivity to anxiety and depression and numerous testimonials of people who have cured their anxiety and depression by giving up gluten. (everywomanover29.com)
Add to this all of the «factors» behind numerous testimonials, recommendations, and awards and you have a proven formula for success in your next legal malpractice case! (jacksonandwilson.com)