呪詛

Etymology 1
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From compound. Compare modern 🇨🇬.

The reading of the first character shifted from the regular goon reading of shu to the kan'yōon reading of ju.

Noun

 * 1) curse, malediction

Verb

 * 1) to curse someone or something

Etymology 2
The of juso above. Most common from the Heian through the Muromachi periods.

It is unclear if the pronunciation itself also shifted, or just the spelling.

Noun

 * 1)  curse, malediction

Verb

 * 1)  to curse someone or something