9-letter words containing n, a, p, o
- hard porn — hard-core pornography.
- harpooned — Simple past tense and past participle of harpoon.
- harpooner — a barbed, spearlike missile attached to a rope, and thrown by hand or shot from a gun, used for killing and capturing whales and large fish.
- headphone — Audio. a headset designed for use with a stereo system.
- heptagons — Plural form of heptagon.
- heptanone — any of three isomeric ketones, C 11 H 14 O, derived from heptane.
- honeytrap — A stratagem in which irresistible bait is used to lure a victim.
- hopatcong — a town in N New Jersey.
- hot pants — (used with a plural verb) very brief and usually tight-fitting shorts for women and girls, first popularized in the early 1970s.
- hypernova — (astronomy) The gravitational collapse of a massive star to form a black hole.
- hypnoidal — characterizing a state that resembles mild hypnosis but that is usually induced by other than hypnotic means.
- hypomania — a mania of low intensity.
- hypomanic — Afflicted with a mild state of mania.
- hyponasty — increased growth along the lower surface of a plant or plant part, causing it to bend upward.
- hypopneas — Plural form of hypopnea.
- hypopnoea — Alternative spelling of hypopnea.
- hypotonia — An abnormal loss of muscle tone.
- ice apron — a structure built in a river upstream from a bridge pier or the like for protection against drifting ice.
- impaction — an act or instance of impacting.
- impassion — to fill, or affect strongly, with intense feeling or passion; inflame; excite.
- important — of much or great significance or consequence: an important event in world history.
- in a spot — a rounded mark or stain made by foreign matter, as mud, blood, paint, ink, etc.; a blot or speck.
- incompact — not compact; loose.
- incompass — Archaic form of encompass.
- inoperant — Not operant.
- inopinate — unexpected
- ionopause — the transitional zone between the ionosphere and the mesosphere.
- isopteran — a member of the order Isoptera which includes social, colonizing insects such as termites
- isopycnal — Also, isopycnal [ahy-suh-pik-nl] /ˌaɪ səˈpɪk nl/ (Show IPA). having the same density.
- jalapenos — Plural form of jalapeno.
- japonicas — Plural form of japonica.
- john paul — Anson [an-suh n] /ˈæn sən/ (Show IPA), 1798–1858, president of the Republic of Texas.
- kniphofia — Any of several plants, of the genus Kniphofia, having bright, upright flowers.
- lampooned — a sharp, often virulent satire directed against an individual or institution; a work of literature, art, or the like, ridiculing severely the character or behavior of a person, society, etc.
- lampooner — Someone who lampoons; someone who pokes fun.
- land-poor — in need of ready money while owning much land.
- landloper — a wanderer, vagrant, or adventurer.
- lap joint — Also called plain lap. a joint, as between two pieces of metal or timber, in which the pieces overlap without any change in form.
- layperson — a person who is not a member of the clergy; one of the laity.
- lone pair — shoes, eyes
- long play — a long-playing phonograph record.
- madperson — (gender-neutral) A madman or madwoman.
- main loop — (programming) The top-level control flow construct in an input- or event-driven program, the one which receives and acts or dispatches on the program's input events. See also driver.
- man power — the power supplied by human physical exertions: an ancient building constructed entirely by man power.
- manoscopy — the measurement of the densities of gases
- mappemond — a map of the world
- mattaponi — a river in E Virginia, flowing SE to join the Pamunkey and form the York River. 120 miles (193 km) long.
- megaphone — a cone-shaped device for magnifying or directing the voice, chiefly used in addressing a large audience out of doors or in calling to someone at a distance. Compare bullhorn.
- menopause — the period of permanent cessation of menstruation, usually occurring between the ages of 45 and 55.
- meropidan — any insectivorous bird of the family Meropidae