The kanji 濃 primarily conveys the concept of "thick," "dense," "rich," or "strong." It refers to something that has a high concentration of a substance, a deep color, or an intense flavor or feeling. It suggests a fullness or intensity that is not diluted or weak.

・On-yomi (音読み): ノウ (nou) ・Kun-yomi (訓読み): こい (koi)

⚫︎ 濃いコーヒー Translation: Strong coffee ⚫︎ 色彩が濃い Translation: The colors are deep ⚫︎ 濃度が高い Translation: High concentration

The kanji 濃 is a phono-semantic compound (形声文字, けいせいもじ). The semantic component is 水 (みず, water) and the phonetic component is 農 (のう, farming). The original meaning of 濃 was related to water or liquids and their thickness or concentration. Over time, the meaning expanded to include other things that were dense or rich, like colors, flavors, or emotions. The part 水 signifies water, and the part 農 gives the sound and hints at the idea of producing a lot, which implies a concentrated or rich substance.