Home › Words › R › rainstormrainstorm/ˈɹeɪnstɔːm/rainstorm means A storm characterized by substantial, heavy rainfall.rainstorm is pronounced /ˈɹeɪnstɔːm/.EtymologyFrom rain + storm.nounA storm characterized by substantial, heavy rainfall.Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.rainstormy 77% match — Undergoing a rainstorm. vs rainstorm →arkstorm 71% match — A very severe rainstorm lasting for many days, fed by an atmospheric river, causing massive flooding. vs rainstorm →cloudburst 70% match — A sudden heavy rainstorm. vs rainstorm →raining 69% match — A fall of rain. vs rainstorm →downpour 64% match — A heavy fall of rain. vs rainstorm →gullywasher 64% match — An intense, but usually short-lived, rainstorm. vs rainstorm →rainlike 64% match — Resembling rain. vs rainstorm →rains 63% match — A rainy season; monsoon vs rainstorm →