濃 means “thick, strong, dark”

こい · koi

Also: concentrated, undiluted

Kun'yomi (Japanese reading)
こい
On'yomi (Chinese reading)
ノウ

JLPT N2 · Taught in secondary school · 16 strokes

The story

Water (氵) beside farming (農): picture a whole harvest simmered down into one rich broth. 濃い is strong, thick or dark: strong coffee, a heavy flavor, a deep color, and 濃厚 is the word for a rich, creamy ramen soup.

Used in 濃い (koi, thick/strong/dark), 濃度 (noudo, concentration), and 濃厚 (noukou, rich/dense)

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Readings from KANJIDIC2, © EDRDG, CC BY-SA.