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)

-n't shortened (enclitic) form of not¹

• single-step
• single-stepped
• single-stepping
• single-steps
• singlestick
• singlesticks
• singlet
• single tax
• single taxes
• single ten
• single tens
• singleton
• singletons
• single transferable vote
• singletree
• singletrees
• singlets
• single-wicket
• singling
• singlings
• singly
• sing out
• sings
• sing-sing
• sing-sings