The kanji 煩 fundamentally conveys the ideas of trouble, worry, annoyance, and being bothered. It signifies a state of mental or emotional disturbance, something that causes inconvenience or difficulty. It can relate to internal feelings like worry or external situations causing problems.

・On-yomi (音読み): ・ハン (han) ・Kun-yomi (訓読み): ・わずら-う (wazura-u): to be troubled, to be worried; to suffer from (a disease) ・わずら-わす (wazura-wasu): to trouble, to bother; to annoy

⚫︎ 面倒な煩雑さ(mendou na 煩zatsu-sa) Translation: Troublesome complexity. ⚫︎ 煩悩(bonnou) Translation: earthly desires; human passions; suffering; mental anguish. ⚫︎ 心煩わされる(kokoro wazurawa-sareru) Translation: to be worried; to be troubled

The kanji 煩 is a phono-semantic compound (形声文字, keisei moji). It combines the phonetic component 凡 (han, meaning ordinary or all-inclusive) with the radical 火 (hi, meaning fire). The original meaning likely related to being bothered or troubled by the heat or problems like a fire. Over time, it expanded to encompass general worries and troubles.