| Term | Definition |
| nebulous (adj) | vague; hazy; cloudy |
| necromancy (n) | black magic; dealings with the dead |
| nefarious (adj) | very wicked |
| negation (n) | denial |
| negligence (n) | carelessness |
| neologism (n) | new or newly coined word or phrase |
| neophyte (n) | recent convert; beginner |
| nepotism (n) | favoritism to a relative or friend |
| nettle (v) | annoy |
| nihilism (n) | denial of traditional values; total skepticism |
| nomadic (adj) | wandering |
| nomenclature (n) | terminology; system of names |
| nonchalance (n) | indifference; lack of concern or worry |
| noncommittal (adj) | neutral; undecided |
| nonenity (n) | nonexistence; person of no importance |