honey, nectar, molasses
蜜 centers on thick, sweet substances produced by nature: honey from bees, nectar from flowers, and by extension molasses as a similar sugary syrup.
蜜 combines 虫 (insect) with 宓, which likely contributes the sound. The insect component points to honeybees, making the character a phono-semantic compound for honey.
Under a roof (宀) with a heart (心) inside, an insect (虫) works to produce sweet honey. The top part 宓 suggests something hidden or secret, like honey stored in a hive.
For ミツ, imagine a bee making sweet honey that tastes like a Mitsu apple: Mitsu -> ミツ, and the insect (虫) brings the honey.
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mandarin (esp. the satsuma mandarin (Citrus unshiu)); mandarin orange; tangerine; clementine; satsuma
nectar
honey
honeybee (Apis sp.); honey bee
honeymoon
molasses; black treacle
beeswax
white peach
Hawaiian honeycreeper
Boston Molasses Disaster (January 15, 1919); Great Molasses Flood
Humane King Sutra
the misfortune of others tastes as sweet as honey
the six virtues (perfections) a Buddha elect practices to attain supreme enlightenment
centrifugal sugar; sugar freed from liquid by a centrifuge
honey in one's mouth but a razor in one's belt
non-centrifugal sugar; sugar extracted by evaporation
chamberbitter (Phyllanthus urinaria); gripeweed; shatterstone; stonebreaker; leafflower
wild honey
molasses; black treacle
harvesting honey; gathering nectar