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Pronunciation varies by accent · noun
A form of spinning top that will spin preferentially in one direction (rattling, then reversing, if spun in the other direction)..
Use rattleback when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Rattleback means A form of spinning top that will spin preferentially in one direction (rattling, then reversing, if spun in the other direction)..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use rattleback where its definition matches the intended context.
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