com·pli·men·ta·ry 
/ˌkɑ:mpləˈmɛntəri/ adjective
/ˌkɑ:mpləˈmɛntəri/ adjective 1 : expressing praise or admiration for someone or something
▪ She made complimentary remarks about his work. 2 : given for free
▪ They handed out complimentary brochures. ▪ complimentary tickets ▪ The restaurant offers valet parking as a complimentary service.
▪ She made complimentary remarks about his work.
▪ They handed out complimentary brochures. ▪ complimentary tickets ▪ The restaurant offers valet parking as a complimentary service.
Do not confuse complimentary with complementary.
