The kanji 愚 generally conveys the meaning of "foolish," "stupid," or "silly." It suggests a lack of intelligence, understanding, or good judgment. It often implies a simple-mindedness or a tendency to make mistakes due to a lack of wisdom.

・On-yomi (音読み): グ (gu) ・Kun-yomi (訓読み): おろ（か） (oroka)

⚫︎愚かな行為 (oroka na koui) Translation: Foolish act ⚫︎愚問 (gumon) Translation: Foolish question ⚫︎愚痴をこぼす (guchi wo kobosu) Translation: To grumble; to complain (lit. to spill foolishness)

The kanji 愚 is a 形声文字 (keisei moji), a phono-semantic compound character. It is composed of two parts: ⚫︎The semantic component is 　心 (kokoro, heart/mind), indicating the meaning of the character. ⚫︎The phonetic component is 　虞 (gu), which provides the sound and contributes to the overall meaning. The structure suggests a connection between the mind/heart and the concept of foolishness or lack of wisdom. The presence of the "heart" radical implies that this foolishness is often associated with a lack of consideration, insight, or emotional understanding.