The simple past tense of the verb ‘tidy’ is ‘tidied’.
When we talk about actions that happened in the past, we often use the simple past tense. In the case of ‘tidy’, which means to put things in order or to clean up, the past form takes on a specific ending. To form the simple past tense for regular verbs like ‘tidy’, we typically add -ed to the base form of the verb. Therefore, ‘tidy’ becomes ‘tidied’.