Unsteadfastness is a trait that describes a person's inability to stay consistent or committed to something. When it comes to finding synonyms for this word, there are several options to choose from. For example, fickleness, vacillation, inconstancy, and unpredictability are all words that can be used to describe someone who lacks steadiness in their actions or decisions. Other synonyms for unsteadfastness may include wavering, indecisiveness, and capriciousness. By using these similar words in your writing, you can effectively describe a person or situation that lacks stability or reliability. Ultimately, the use of synonyms can help to add depth and nuance to your writing, allowing you to express yourself more effectively and accurately.