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Pronunciation varies by accent · noun
A collar, fitted with a small radio transmitter, that allows the wearer to be tracked.
Use radio collar when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Radio collar means A collar, fitted with a small radio transmitter, that allows the wearer to be tracked.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use radio collar where its definition matches the intended context.
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