The kanji 不 primarily conveys the idea of "not," "un-," "non-," or "in-." It signifies negation, lack, or the absence of something. It is a very versatile character, often used to create the opposite meaning of a word or to indicate something is not present or does not meet a certain standard.

・On-yomi (音読み): フ (fu) ・Kun-yomi (訓読み): ～（ず） (zu) - used as a suffix, as in the negative form of verbs.

⚫︎ 不便 (fu-ben) Translation: Inconvenient ⚫︎ 不健康 (fu-kenkou) Translation: Unhealthy ⚫︎ 不愉快 (fu-yukai) Translation: Unpleasant

The kanji 不 is a pictograph. ⚫︎ It originally depicted a sprout or a bud struggling to emerge from the earth. ⚫︎ Over time, the meaning evolved to represent "not" or "negative" because the sprout's inability to fully emerge symbolized a lack or absence. ⚫︎ Its shape has undergone simplification throughout its history, but its core meaning remains consistent.