Meanings
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1
adj
Having the colour of a clear sky or the sea.
She wore a blue dress to the party.
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2
noun
The colour of a clear sky or the sea.
The walls were painted a soft blue.
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3
adj
Sad or unhappy.
He felt a bit blue after his friends left.
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4
adj
Relating to sex in a rude or improper way.
They were watching a blue movie late at night.
Thesaurus
Etymology
From Middle English blewe, from Anglo-Norman blew (“blue”), from Middle French bleu, from Old French blöe, bleve, blef (“blue”), from Frankish *blāu (“blue”) (perhaps through a Late Latin blāvus, blāvius (“blue”) attested from Isidore of Seville), from Proto-Germanic *blēwaz (“blue, dark blue”), from Proto-Indo-European *bʰlēw- (“yellow, blond, grey”). Cognate with dialectal English blow (“blue”), Scots blue, blew (“blue”), North Frisian bla, blö (“blue”), Saterland Frisian blau (“blue”), Dutch blauw (“blue”), German blau (“blue”), Danish, Norwegian and Swedish blå (“blue”), Icelandic blár (“b…