Synonyms for Unused (same or very similar meaning)
WordNet sense 1 (not of long duration; having just (or relatively recently) come into being or been made or acquired or discovered):
new
WordNet sense 2 (not yet used or soiled):
fresh
WordNet sense 3 (free from dirt or impurities; or having clean habits):
clean
WordNet sense 4 (not in active use):
idle
WordNet sense 5 (not habituated to; unfamiliar with):
unaccustomed
From the ODE community, based on WordNet
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