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Pronunciation varies by accent · noun
A piece of software that has never been used at all since its creation..
Use shelfware when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Shelfware means A piece of software that has never been used at all since its creation..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use shelfware where its definition matches the intended context.
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