anticipative (usually fol. by of): We were eagerly anticipant of her arrival.
–noun
2.
a person who anticipates.
Origin: 1620–30; < L anticipant- (s. of anticipāns, prp. of anticipāre) taking before, equiv. to anti- (var. of ante-ante-) + -cip- (comb. form of capere to take) + -ant--ant