Lightheadedness and Mindlessness

Lightheadedness noun - A frivolous lack of prudence.

Mindlessness and lightheadedness are semantically related. In some cases you can use "Mindlessness" instead a noun "Lightheadedness".

Mindlessness noun - The quality or state of lacking intelligence or quickness of mind.

Lightheadedness and mindlessness are semantically related. Sometimes you can replace term "Lightheadedness" with "Mindlessness", this nouns are similar.