testimonial UK /tɛstɪˈməʊni.əl/US /tɛstɪˈmoʊni.əl/noun 4adjective 1forms 1 noun4 •A (usually written) recommendation of someone's worth or character.The company website features a customer testimonial. •A tribute given in appreciation of someone's service etc.He gave a moving testimonial at the retirement dinner. •A match played in tribute to a particular player (who sometimes receives a proportion of the gate money). •A statement, especially one given under oath; testimony.The witness provided a written testimonial to the court. adjective1 •Serving as testimony. formstestimonials