うら
rear, reverse
Turn the cloth over and there is the face of it nobody was meant to look at. The same うら as the back you get shown in 裏切る. Round the back of the office there is a park: うら.
逆 ぎゃく is reverse as in the opposite direction and 背中 せなか is the back on your body. 裏 is the other side of a thing.
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Emaki is not affiliated with, or endorsed by, Kaishi 1.5k or its authors. The word, reading and meaning come from the Kaishi 1.5k deck, used with their permission. The mnemonic, the note and the kanji breakdown are original work, published under CC BY-SA 4.0.