"Become flaccid" is a commonly used term to describe the state of something losing its firmness or stiffness. However, there are several other synonyms that can be used to describe the same state. Words such as, wilted, dangled, limp, sagged, slackened, weakened, softened, and drooped, all convey the same meaning as "become flaccid." These words are used to describe anything from plants losing their turgidity, to muscles losing their tone, to even buildings or structures losing their stability. All in all, when something becomes flaccid, it means that it has lost its strength and is no longer able to maintain its original form or shape.