形容詞 “blue”
 blue、比較級 bluer、最上級 bluest
- 青い
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 The artist painted a blue sky with fluffy white clouds.
 - 憂鬱な(ゆううつな)
After the breakup, he was feeling really blue and didn't want to go out.
 - 民主党の(アメリカの政治において)
The state has traditionally voted for Democrats, making it a blue state.
 - 青写真の(スラングで、性的または不快な内容を含む)
The comedian's jokes were so blue that half the audience walked out.
 
名詞 “blue”
 単数形 blue、複数形 blues または不可算
- 青
The painter chose various shades of blue for the seascape.
 - 青色のもの
In the game, you must collect all the blues to win.
 - ブルー(スポーツで優秀な成績を収めた学生に授与される賞)
After years of dedication to the swim team, she finally earned her blue.
 - 空
Birds disappeared into the blue.
 - 海
The ship set sail, disappearing into the vast blue.
 - 青化処理(さび防止のための)
Before assembling the machinery, the workers applied blue to all the steel parts to prevent corrosion.
 - 漂白剤(洗濯物を白く見せるための)
She used a blue in the wash to make her whites look whiter.
 
動詞 “blue”
 不定詞 blue; 三単現 blues; 過去形 blued; 過去分詞 blued; 動名詞 bluing, blueing
- 青くする
As the cold evening set in, the frost started blueing the tips of the grass.
 - 青化処理をする
The blacksmith blued the steel to finish the custom knife.
 - 漂白剤を使う
She blued her grandmother's lace tablecloth to restore its original brightness.