Wilt refers to the condition of plants when they become weak or droopy due to a lack of water or excessive heat. Some common synonyms of wilt include sag, wither, droop, and shrivel. Other related terms that can be used interchangeably with wilt are languish, fade, and decline. These words convey a sense of weakness or loss of vitality that is often associated with the wilting of plants. In addition to these words, there are many other synonyms for wilt that can be used depending on the context and the level of intensity or urgency conveyed in the message.