verb

complete or agree on a finished and definitive version of.

efforts intensified to finalize plans for post-war reconstruction

conclude,complete,bring to a conclusion,clinch,settle,establish,work out,resolve,decide,secure,tie up,wrap up,put the finishing touches to,set the seal on,seal,confirm,negotiate,broker,reach (an) agreement on,agree on,come to terms on,reach terms on,shake hands on,sew up,wind up,polish off,put the icing on the cake,thrash out,hammer out