As opposed to "old", the synonyms could be fresh, innovative, modern, the latest, or up-to-date. In some contexts, it can also mean advanced or improved.
New England is the Northeast U.S.
Renamed
New...? Futuristic
Green.
A three syllable word for new is "recently". Another one could be "different".
Another word for brand new is pristine.
youthyougsters
Nation
Another word for addition which starts with the letter N is New.
New England is the Northeast U.S.
Renamed
New
new
Neoplasm
New.
Green.
adapted