出典:Wiktionary
出典:『Wiktionary』 (2024/08/22 15:34 UTC 版)
The origin of sense 1 (“a state of bliss”) is uncertain; however, the following etymology has been suggested:
Compare cloud seven (“state of complete happiness or euphoria”), which may have originated from confusion of cloud nine with seventh heaven.
Sense 2 (“a state of fantastic or impractical dreaming or thinking”) may be due to a confusion between sense 1 and the phrase head in the clouds.
cloud nine (uncountable)
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