† enˈdeavourmentObs.rare. [f. endeavour v. + -ment.] The action of endeavouring; = endeavour n. 1523Skelton Garl. Laurel 400 Your endeuorment So have ye done.1591Spenser M. Hubberd 298 The goodman was meanly well content, Triall to make of his endeuourment.