-n't shortened (enclitic) form of not¹

NT

1. National Theatre (now known as RNT)
2. National Trust
3. New Testament
4. Northern Territory (Aust)
5. Northwest Territories (of Canada)
6. No trumps (cards)

• chrysocracy
• chrysolite
• chrysolites
• chrysophan
• chrysophanic acid
• chrysophans
• chrysophilite
• chrysophilites
• chrysoprase
• chrysoprases
• chrysotile
• chrysotiles
• chs.
• chthonian
• chthonic
• chub
• Chubb
• chubbier
• chubbiest
• chubbily
• chubbiness
• chubbinesses
• chubb-lock
• chubby
• chubs