Grade 11.
- neurophysiology
- neurosecretion
- neuroses
- neurosis
- neurosurgeries
- neurosurgery
- neurotransmission
- newfangledness
- nexus
- nigh
- nightmarishness
- nihilist
- nirvana
- nitrocellulose
- nitrogenisation
- nitrogenization
- nitrosobacteria
- nitrosobacterium
- noir
- nonabandonment