Acronyms like EUC (excellent used condition) and NWT (new with tags) are still used by some, but moving quickly towards obsolete. Unlike years ago, almost nobody will search using those terms so it's a waste of title real estate.
Here's a moderately useful--albeit somewhat outdated--glossary of terms used on the marketplace platform and the discussion-board community you can refer to if you run into acronyms or abbreviations with which you're not familiar.
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