青空|あおぞらaozora[3]nakadaka (mid-high)

1. nounblue sky
   今日きょうは、雲くもひとつない青空あおぞらだ。↗

   Today the sky is a cloudless blue.

• Synonym蒼穹そうきゅうWrittenWritten and literary, for the vault of heaven; 「青空」 is the everyday word and also covers the open air.
• Synonym蒼天そうてんWrittenWritten; can mean the heavens or the Creator, while 「青空」 points to the blue sky of a clear day.
• Synonym碧空へきくうWrittenWritten word for the azure sky; in everyday speech 「青空」 is the natural choice.
• Synonym蒼空そうくうWrittenWritten word for a clear, cloudless blue sky; 「青空」 is the more everyday term.
• Synonym青天せいてんWrittenWritten, and today mostly in the idiom 「青天の霹靂」; 「青空」 is the everyday word.
• Synonym碧落WrittenWritten word for the azure sky, seen mainly in poetry and literary prose; say 「青空」 in everyday speech.
• Synonym碧天WrittenWritten word for the azure sky; everyday speech uses 「青空」.
• Related蒼昊WrittenWritten term for the heavens, found mostly in Chinese-style poetry; 「青空」 is the everyday word.
• Antonym曇天どんてんNeutralNeutral word for a cloudy, overcast sky — the opposite of a clear 「青空」.

Use 「青空」 for a clear blue sky or, in compounds like 「青空教室」「青空市場」, the open air. The written alternatives 「蒼穹」「碧空」 suit poetry and literary prose; 「青天」 appears chiefly in idioms. The opposite is 「曇天」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 青あおい空そら。日中にっちゅうの晴はれた空そら。
2. （複合語ふくごうごの前項ぜんこうとして）野外やがい。屋外おくがい。