- not care a fig
- not have a snowball in hells chance
- neurinoma
- nonlocalized ring
- nonmandatory
- non_dedicated file server
- non_switched line
- no two ways about it
- negative entry
- new broom
- novillada
- nocardiosis
- no time like the present
- nephrite
- noahs ark
- noah
- non_aggression
- non_attack
- noise factor
- normal variant
- non_simultaneous transmission
- niels henrik abel
- ṉa: (nf) proclamation
- not to have the courage
- not alone
- nib
- non capillary pore
- nh
- north atlantic
- ninurta
- north celestial pole
- nonassociative
- nonaligned
- neighbours
- neil armstrong
- neuropraxia
- nitrogenous base
- nonreturnable
- not to mix freely
- not to meddle with others' affairs
- neuroepithelium
- neuroendocrine tumour
- noise sequence
- noise gate
- noise floor
- non_productive task
- neuroanatomic
- non ferrous
- nonflavoured
- not all roses