Flightiness and Irresponsibleness

Flightiness noun - The trait of acting unpredictably and more from whim or caprice than from reason or judgment.

Irresponsibleness and flightiness are semantically related. In some cases you can use "Irresponsibleness" instead a noun "Flightiness".

Irresponsibleness noun - A form of untrustworthiness; the trait of lacking a sense of responsibility and not feeling accountable for your actions.

Flightiness and irresponsibleness are semantically related. Sometimes you can replace term "Flightiness" with "Irresponsibleness", this nouns are similar.