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Pronunciation varies by accent · phrase
(colloquial, usually childish) Alternative spelling of nighty night..
Use nighty-night when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Nighty-night means (colloquial, usually childish) Alternative spelling of nighty night..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use nighty-night where its definition matches the intended context.
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