What does double-u mean?
Double-u means The name of the Latin script letter W/w..
/ˈdʌb.(ə)l.juː/ · noun
The name of the Latin script letter W/w..
She would try the front door, and try the back door, and look in the windows; and once she even looked in the double-u.
Choose a synonym only when it preserves the intended meaning, tone, and grammar of the full sentence.
Double-u means The name of the Latin script letter W/w..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
She would try the front door, and try the back door, and look in the windows; and once she even looked in the double-u.
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