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