10-letter words containing p, e, r, i, o
- improve on — refine, develop
- improvised — made or said without previous preparation: an improvised skit.
- improviser — to compose and perform or deliver without previous preparation; extemporize: to improvise an acceptance speech.
- improvises — Third-person singular simple present indicative form of improvise.
- in corpore — in body; in substance.
- incompared — incomparable; unmatched; unequalled
- infosphere — electronic communication and networking as a whole
- infraposed — placed beneath
- inoperable — not operable or practicable.
- inoperancy — The quality of being inoperant or inoperative, of lacking the power to be effective or effectual.
- inspectors — Plural form of inspector.
- intergroup — taking place or being between groups: intergroup relationships.
- interloped — Simple past tense and past participle of interlope.
- interloper — a person who interferes or meddles in the affairs of others: He was an athiest who felt like an interloper in this religious gathering.
- interlopes — Third-person singular simple present indicative form of interlope.
- interphone — an intercommunication system using telephones to connect offices, stations, etc., as in a building or ship; intercom.
- interpoint — (transitive) To mark with stops or pauses; to punctuate.
- interpolar — connecting or being between poles: an interpolar flight.
- interposal — (dated) interposure.
- interposed — Simple past tense and past participle of interpose.
- interposer — One who interposes.
- interposes — Third-person singular simple present indicative form of interpose.
- intertroop — occurring or existing between two or more troops
- introspect — to practice introspection; consider one's own internal state or feelings.
- ionophores — Plural form of ionophore.
- ionosphere — the region of the earth's atmosphere between the stratosphere and the exosphere, consisting of several ionized layers and extending from about 50 to 250 miles (80 to 400 km) above the surface of the earth.
- isentropes — a line on a map or chart joining points having equal entropy.
- isentropic — having a constant entropy.
- isoprenoid — pertaining to, derived from, or similar to isoprene.
- isopterous — belonging or pertaining to social insects of the order Isoptera, comprising the termites.
- isotopomer — (chemistry) any isomer of an organic compound differing only in the position of an isotope.
- jeopardies — Plural form of jeopardy.
- jeoparding — Present participle of jeopard.
- jeopardise — to put in jeopardy; hazard; risk; imperil: He jeopardized his life every time he dived from the tower.
- jeopardize — to put in jeopardy; hazard; risk; imperil: He jeopardized his life every time he dived from the tower.
- kiloampère — one thousand amperes
- kiloparsec — a unit of distance, equal to 1000 parsecs. Abbreviation: kpc.
- kinsperson — A kinsman or kinswoman.
- kryptonite — The one weakness of something or someone that is otherwise invulnerable, an Achilles' heel.
- laeotropic — oriented or coiled in a leftward direction, as a left-spiraling snail shell.
- lectorship — a lecturer in a college or university.
- leptospira — any of several spirally shaped, aerobic bacteria of the genus Leptospira, certain species of which are pathogenic for human beings.
- leptospire — Any bacterium of the genus Leptospira.
- limitrophe — (of a country or region) on or near a frontier
- lipochrome — any of the naturally occurring pigments that contain a lipid, as carotene.
- liver opal — a form of opal having a reddish-brown coloration
- liver spot — a dark brown skin spot, usually caused by sun exposure
- longprimer — in printing, a size of type intermediate between small pica and bourgeois
- loperamide — a substance, C 29 H 33 ClN 2 O 2 , used in the treatment of diarrhea.
- loup river — a river in E central Nebraska, flowing E to the Platte River. 68 miles (109 km) long.