Found 2 items, similar to weightily.
English → English (WordNet) Definition: weightily weightily adv 1: in a serious manner; “the speech was weighty and it was weightily delivered” 2: as something very heavy; “she moved weightily”
English → English (gcide) Definition: Weightily Weightily \Weight"i*ly\, adv. In a weighty manner. [1913 Webster]