The word "decrepitly" is spelled as [dɪˈkrɛpɪtli]. It is pronounced as dih-KREP-it-lee. This adverb is derived from the adjective "decrepit," which means weakened by old age or wear. "Decrepitly" is used to describe the state of something that is in a weak or feeble condition. The spelling follows the regular rules of English spelling, using the suffix "-ly" to form an adverb from the adjective "decrepit." This word can add a descriptive touch to your writing, especially when describing the frailty of someone or something.