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Pronunciation varies by accent · noun
The routing of a signal, data stream, etc. from its origin back to the origin, primarily as a means of testing the transmission or transportation infrastructure..
Use loop back when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Loop back means The routing of a signal, data stream, etc. from its origin back to the origin, primarily as a means of testing the transmission or transportation infrastructure..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use loop back where its definition matches the intended context.
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