Here are some synonyms for flighty:
* Whimsical
* Fickle
* Unstable
* Restless
* Irresponsible
* Carefree (sometimes used in a more positive sense)
Examples:
* "She's so flighty, she changes her plans every five minutes."
* "His flighty nature made it hard to trust him with important tasks."
* "She's a bit flighty, but she's also incredibly creative."
The word "flighty" can be used to describe both people and things. For example, you might describe a butterfly as "flighty" because it flits around from flower to flower.
However, it's important to note that "flighty" can have a slightly negative connotation. It implies a lack of seriousness or stability, which can be seen as a weakness.