Balbucinate is a seldom used term that refers to a stuttering or stammering manner of speaking. While it may not be a common word, there are other synonyms that can describe this impairment. Some of these include falter, stutter, stumble, fumble, bumble, and stammer. These words are all similar in that they describe an inability to communicate smoothly and confidently. People may balbucinate due to nervousness, anxiety, or a speech impediment. While it can be frustrating for the speaker, it's important to remember that everyone communicates in their own unique way and there's no need to feel self-conscious if you happen to balbucinate from time to time.