Impress  —v. 1 (often foll. By with) a affect or influence deeply. B affect (a person) favourably (was most impressed). 2 (often foll. By on) emphasize (an idea etc.) (must impress on you the need to be prompt). 3 a (often foll. By on) imprint or make (a mark). B mark (a thing) with a stamp, seal, etc. —n. 1 mark made by a seal, stamp, etc. 2 characteristic mark or quality.  impressible adj. [french: related to *press1]