Droopier is a comparative form of the word 'droopy' used to describe someone or something that is lethargic, drooping, or sagging. Some possible antonyms for droopier include words such as lively, perky, energetic, brisk, and sprightly. These words indicate a sense of liveliness and animation which is the opposite of droopier. For instance, when applied to a person's demeanor, these terms suggest a state of being alert, enthusiastic, and full of joy. Alternatively, the opposite of droopier could also be described using words such as upright, straight, or firm, which imply strength, resilience, and stability.