-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)

• compositors
• compositous
• compos mentis
• compossibilities
• compossibility
• compossible
• compost
• composted
• composter
• composters
• compost heap
• compost heaps
• composting
• composts
• composture
• compostured
• compostures
• composturing
• composure
• composures
• compot
• compotation
• compotations
• compotationship
• compotationships