Terrifically/təˈrɪfɪkli/ Definition 1 of 3Pro Tip 1/3Positive Emphasis Use 'terrifically' to emphasize positive qualities and enhance compliments. Your speech was terrifically inspiring! Pro Tip 2/3Express Enthusiasm Show your enthusiasm about events or achievements by using 'terrifically'. We were terrifically excited for the concert. Pro Tip 3/3Genuine Praise Signal genuine praise for exceptional performance with 'terrifically'. She's done a terrifically good job organizing the event.