9-letter words containing a, p, e, i, r
- isopteran — a member of the order Isoptera which includes social, colonizing insects such as termites
- issue par — an equality in value or standing; a level of equality: The gains and the losses are on a par.
- jasperite — Jasper (the gem).
- jasperize — To convert into, or make to resemble, jasper.
- kidnapers — Plural form of kidnaper.
- kidnapper — to steal, carry off, or abduct by force or fraud, especially for use as a hostage or to extract ransom.
- kraepelin — Emil [ey-meel] /ˈeɪ mil/ (Show IPA), 1856–1926, German psychiatrist.
- lamproite — (geology) Any of several volcanic rocks having a high potassium content.
- leporidae — an animal of the family Leporidae, comprising the rabbits and hares.
- lexigraph — A lexigram or ideograph, a graphical depiction of a single word.
- live trap — a trap for capturing a wild animal alive and without injury.
- lone pair — shoes, eyes
- magstripe — Magnetic stripe.
- mainprise — (legal, historical) A writ directed to the sheriff, commanding him to take sureties, called mainpernors, for the prisoner's appearance, and to let him go at large.
- malipiero — Gian Francesco [jahn frahn-che-skaw] /dʒɑn frɑnˈtʃɛ skɔ/ (Show IPA), 1882–1973, Italian composer.
- mapepires — Plural form of mapepire.
- mepacrine — The drug quinacrine.
- merit pay — an additional sum paid to an employee, as a schoolteacher, whose work is superior and whose services are valued.
- meropidan — any insectivorous bird of the family Meropidae
- metacarpi — Plural form of metacarpus.
- microtape — (hardware, storage) /mi:'kroh-tayp/ Occasionally used to mean a DECtape, as opposed to a macrotape. Apparently the term "microtape" was actually the official term used within DEC for these tapes until someone coined the word "DECtape", which, of course, sounded sexier to the marketroids. Another version of the story holds that someone discovered a conflict with another company's "microtape" trademark.
- midspread — (statistics) The interquartile range.
- misphrase — to phrase badly or incorrectly
- mispraise — to praise wrongly or mistakenly
- misrepeat — (transitive) To repeat wrongly; to give a wrong version of.
- mixer tap — a tap in which hot and cold water supplies have a joint outlet but are controlled separately
- napierian — of, relating to, or formulated by John Napier.
- nephridia — the excretory organ of many invertebrates, consisting of a tubule with one end opening into the body cavity and the other opening into a pore at the body surface.
- nonpareil — having no equal; peerless.
- oil-paper — a paper made waterproof and translucent by treatment with oil.
- opacifier — an agent added to render something opaque
- operatics — Exaggerated or overly emotional behaviour; histrionics.
- operating — used or engaged in performing operations: an operating surgeon.
- operation — an act or instance, process, or manner of functioning or operating.
- operative — a person engaged, employed, or skilled in some branch of work, especially productive or industrial work; worker.
- operatize — to turn (a play, novel, etc) into an opera
- overpaint — to cover over with paint
- overplaid — a plaid pattern superimposed on another plaid
- p/e ratio — price-to-earnings ratio
- padre pio — a form of punishment shooting employed by paramilitaries in Northern Ireland in which the victim is shot through the palms of both hands
- paediatry — the branch of medical science concerned with children and their diseases
- painterly — of, relating to, or characteristic of a painter.
- paintress — a female painter
- palmister — a person telling fortunes by reading palms
- paludrine — proguanil hydrochloride, a synthetic antimalarial drug first produced in 1944
- pan-fried — Pan-fried food is food that has been cooked in hot fat or oil in a frying pan.
- pandering — a person who furnishes clients for a prostitute or supplies persons for illicit sexual intercourse; procurer; pimp.
- panderism — the work of a pander
- panegyric — a lofty oration or writing in praise of a person or thing; eulogy.
- panetiere — a small, decorative livery cupboard, made especially in Provence in the 18th century.