- Nighthawk Noun
- Nightie Noun
- Nightingale Noun
- Nightjar Noun
- Nightlife Noun
- Nightmare Noun Adj
- Nightmen Noun
- Nightrider Noun
- Nightrobe Noun
- Nightshade Noun
- Nightshift Noun
- Nightshirt Noun
- Nightside Noun
- Nightspot Noun
- Nightstand Noun
- Nightstick Noun
- Nighttime Noun Adj
- Nightviewer Noun
- Nightwalker Noun
- Nightwork Noun
- Nigrescence Noun
- Nigrification Noun
- Nigritude Noun
- Nigrometer Noun
- Nigrosine Noun
- NIH Noun
- Nihil Noun
- Nihilism Noun
- Nihilist Noun
- Nihility Noun
- Nijmegen Noun
- Nikethamide Noun
- Nikkei Noun
- Nil Noun
- Nile Noun
- Nilgai Noun
- Nill Noun Verb
- Nilometer Noun
- Nilpotency Noun
- Nilpotent Adj Noun
- Nilradical Noun
- Nimber Noun
- Nimbleness Noun
- Nimbostratus Noun
- Nimbus Noun
- Nimby Noun
- Nimiety Noun
- Nimrod Noun
- Nimustine Noun
- Nincompoop Noun
- Nine Num Noun
- Nine-tenths Noun Adj
- Ninepence Noun
- Ninepins Noun
- Niner Noun
- Nineteens Noun
- Ninetieth Adj Noun
- Ninety Adj Noun
- Nineveh Noun
- Ninhydrin Noun