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Pronunciation varies by accent · noun
A feather in the first set of down in a bird that has two such sets.
Use protoptile when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Protoptile means A feather in the first set of down in a bird that has two such sets.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use protoptile where its definition matches the intended context.
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