/ˈɹæpɪd/
noun
(often in the plural) a rough section of a river or stream which is difficult to navigate due to the swift and turbulent motion of the water.A burst of rapid fire.adjective
Very swift or quick.Steep, changing altitude quickly. (of a slope)Needing only a brief exposure time. (of a lens, plate, film, etc.)Violent, severe.Happy.adverb
(archaic or colloquial) Rapidly.