The kanji character 不 primarily conveys the meaning of "not," "un-," "non-," or "in-." It indicates negation, lack, or the absence of something. It often functions as a prefix, changing the meaning of a word to its opposite.

・On-yomi (音読み): フ (fu) ・Kun-yomi (訓読み): None, but often used as a prefix.

⚫︎不便 Translation: Inconvenient ⚫︎不安 Translation: Anxiety, uneasiness ⚫︎不健康 Translation: Unhealthy

I am sorry, but I do not have sufficient information to reliably identify the correspondence with the user's native language.

The kanji 不 is a pictograph. It is believed to represent a plant root that has not yet sprouted. This imagery signifies "not" or "without," as the plant has not yet begun to grow. The character's form has evolved over time, but its core meaning of negation has remained consistent.