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Pronunciation varies by accent · noun
An air-to-ground telephone service for passengers on airline flights..
Use airphone when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Airphone means An air-to-ground telephone service for passengers on airline flights..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use airphone where its definition matches the intended context.
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