| arenavirus | (noun) animal viruses belonging to the family Arenaviridae | - |
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| astronavigation | (noun) navigating according to the positions of the stars | Synonyms: celestial navigation |
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| bonavist | (noun) perennial twining vine of Old World tropics having trifoliate leaves and racemes of fragrant purple pea-like flowers followed by maroon pods of edible seeds; grown as an ornamental and as a vegetable on the Indian subcontinent; sometimes placed in genus Dolichos | Synonyms: Dolichos lablab, Egyptian bean, hyacinth bean, Indian bean, Lablab purpureus |
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| canavanine | (noun) an amino acid found in the jack bean | - |
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| circumnavigate | (verb) travel around, either by plane or ship | Synonyms: compass |
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| circumnavigation | (noun) traveling around something (by ship or plane) | - |
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| coronavirus | (noun) a viral disease caused by SARS-CoV-2 that caused a global pandemic in 2020 | Synonyms: 2019-nCoV acute respiratory disease, corona, coronavirus disease 2019, COVID-19, novel coronavirus pneumonia, Wuhan coronavirus, Wuhan flu, Wuhan pneumonia, Wuhan virus |
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| hepadnavirus | (noun) a group of animal DNA viruses including viruses of ducks and woodchucks and squirrels and others as well as the virus causing hepatitis B in humans | - |
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| indinavir | (noun) a protease inhibitor (trade name Crixivan) used for treating HIV | Synonyms: Crixivan |
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| knave | (noun) one of four face cards in a deck bearing a picture of a young prince | Synonyms: jack |
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| (noun) a deceitful and unreliable scoundrel | Synonyms: rapscallion, rascal, rogue, scalawag, scallywag, varlet |
| knavery | (noun) lack of honesty; acts of lying or cheating or stealing | Synonyms: dishonesty |
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| knavish | (adjective) marked by skill in deception | Synonyms: crafty, cunning, dodgy, foxy, guileful, slick, sly, tricksy, tricky, wily |
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| knavishly | (adverb) in an subtle, cunning manner | Synonyms: artfully, craftily, cunningly, foxily, slyly, trickily |
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| naval | (adjective) connected with or belonging to or used in a navy | - |
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| nave | (noun) the central area of a church | - |
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| navel | (noun) a scar where the umbilical cord was attached | Synonyms: belly button, bellybutton, omphalos, omphalus, umbilicus |
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| (noun) the center point or middle of something | Synonyms: navel point |
| navicular | (adjective) shaped like a boat | Synonyms: scaphoid |
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| (noun) the largest wrist bone on the thumb side | Synonyms: os scaphoideum, scaphoid bone |
| navigability | (noun) the quality of being suitable for the passage of a ship or aircraft | - |
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| navigable | (adjective) able to be sailed on or through safely | - |
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| navigate | (verb) act as the navigator in a car, plane, or vessel and plan, direct, plot the path and position of the conveyance | Synonyms: pilot |
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| (verb) travel on water propelled by wind or by other means | Synonyms: sail, voyage |
| (verb) direct carefully and safely | - |
| navigation | (noun) the guidance of ships or airplanes from place to place | Synonyms: pilotage, piloting |
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| (noun) the work of a sailor | Synonyms: sailing, seafaring |
| (noun) ship traffic | - |
| navigational | (adjective) of or relating to navigation | - |
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| navigator | (noun) in earlier times, a person who explored by ship | - |
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| (noun) the member of an aircrew who is responsible for the aircraft's course | - |
| (noun) the ship's officer in charge of navigation | Synonyms: sailing master |
| navvy | (noun) a laborer who is obliged to do menial work | Synonyms: drudge, galley slave, peon |
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| navy | (noun) a dark shade of blue | Synonyms: dark blue, navy blue |
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| (noun) an organization of military vessels belonging to a country and available for sea warfare | Synonyms: naval forces |
| nelfinavir | (noun) a protease inhibitor (trade name Viracept) used in treating HIV usually in combination with other drugs | Synonyms: Viracept |
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| picornavirus | (noun) a group of single-strand RNA viruses with a protein coat | - |
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| ritonavir | (noun) a protease inhibitor (trade name Norvir) used in treating HIV | Synonyms: Norvir |
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| saquinavir | (noun) a weak protease inhibitor (trade name Invirase) used in treating HIV | Synonyms: Invirase |
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| unavailability | (noun) the quality of not being available when needed | - |
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| unavailable | (adjective) not available or accessible or at hand | - |
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| unavailing | (adjective) producing no result or effect | Synonyms: futile, ineffectual, meaningless, otiose |
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| unavenged | (adjective) for which vengeance has not been taken | - |
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| unavoidability | (noun) the quality of being impossible to avoid or evade | Synonyms: ineluctability |
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| unavoidable | (adjective) impossible to avoid or evade | Synonyms: ineluctable, inescapable |
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| unavoidably | (adverb) by necessity | Synonyms: ineluctably, inescapably, inevitably |
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| unavowed | (adjective) not openly expressed | Synonyms: sneaking |
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| (adjective) not openly made known | Synonyms: secret |
| (adjective) not affirmed or mentioned or declared | - |
| unnavigable | (adjective) incapable of being navigated | - |
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