rainy /ˈɹeɪni/adjective 1forms 2phrases 2 adjective1 •Pouring with rain; wet; showeryDue to the rainy weather, we decided not to play in the park.It's a very rainy day, so let's stay indoors. formsrainier · rainiest Phrases with rainy rainy dayA difficult period of need, in reference to a time when money will be needed. save for a rainy dayTo keep some money back for possible expensive problems in the future.