companionize,v.|kəmˈpænjənaɪz| [f. as prec. + -ize.] trans. To act as companion to. 1883Jrnl.Educ. 1 Dec. 402 [Advt.]She would be willing..to converse with and companionise young people.1888Besant Herr Paulus III. xii. 223 To travel around with a show..to companionise a two-headed nightingale.