13-letter words containing r, i, g, o, s
- impersonating — to assume the character or appearance of; pretend to be: He was arrested for impersonating a police officer.
- impoverishing — Present participle of impoverish.
- improgressive — (archaic) Not progressive.
- inaugurations — Plural form of inauguration.
- incongruences — not congruent.
- incongruities — the quality or condition of being incongruous.
- incongruously — out of keeping or place; inappropriate; unbecoming: an incongruous effect; incongruous behavior.
- incorrigibles — Plural form of incorrigible.
- intercrossing — Present participle of intercross.
- interreligous — Between religions.
- interrogators — Plural form of interrogator.
- introgressant — an individual resulting from introgression
- introgression — the introduction of genes from one species into the gene pool of another species, occurring when matings between the two produce fertile hybrids.
- introgressive — Producing introgression.
- introspecting — to practice introspection; consider one's own internal state or feelings.
- investigators — Plural form of investigator.
- investigatory — to examine, study, or inquire into systematically; search or examine into the particulars of; examine in detail.
- ironmongeries — a hardware store or business.
- irreligionist — One who is irreligious.
- irreligiously — In an irreligious fashion.
- isoamyl group — the univalent group C 5 H 11 .
- jury shopping — the practice of presenting a case to several juries until a favourable decision is obtained
- kentish glory — a moth, Endromis versicolora, common in north and central Europe, having brown variegated front wings and, in the male, orange hindwings
- killing frost — the occurrence of temperatures cold enough to kill all but the hardiest vegetation, especially the last such occurrence in spring and the first in fall, events that limit the agricultural growing season.
- king's ransom — an extremely large amount of money: The painting was sold for a king's ransom.
- labiogression — location of the anterior teeth forward of their natural position.
- labour-saving — A labour-saving device or idea makes it possible for you to do something with less effort than usual.
- laryngologist — A person who studies or specializes in laryngology; a subspeciality of otorhinolaryngology.
- laryngoscopic — Of or pertaining to laryngoscopy.
- laryngotomies — Plural form of laryngotomy.
- laser cooling — a technique using laser light to cool atoms to a very low temperature by removing momentum from the particles.
- legislatorial — of or relating to a legislator, legislature, or legislation; legislative.
- loan-sharking — the practice of lending money at exorbitant or illegal interest rates
- longsuffering — enduring injury, trouble, or provocation long and patiently.
- losing hazard — an unavoidable danger or risk, even though often foreseeable: The job was full of hazards.
- losing streak — a succession of losses or defeats
- luxembourgish — Also, Luxembourgish [luhk-suh m-bur-gish] /ˈlʌk səmˌbɜr gɪʃ/ (Show IPA). Letzeburgesch.
- macroorganism — an organism that can be seen with the naked eye.
- magnesiferous — (geology) Containing magnesium.
- magnetiferous — (dated) Producing or conducting magnetism.
- malariologist — An expert in malaria.
- manganiferous — containing manganese.
- marching song — a song with the rhythm of a march, esp sung by marching soldiers
- mare frigoris — (Sea of Cold) a dark plain in the northern hemisphere, in the first and second quadrants of the face of the moon: about 55 miles (90 km) wide at its narrowest width and 750 miles (1200 km) long: about 67,000 sq. mi. (174,000 sq. km).
- marginal cost — the cost of one additional unit of any item produced or bought in quantity.
- marriage vows — promises made as part of wedding ceremony
- martyrologies — Plural form of martyrology.
- mastigophoran — Also, mastigophore [mas-ti-guh-fawr, -fohr] /ˈmæs tɪ gəˌfɔr, -ˌfoʊr/ (Show IPA). a protozoan of the phylum Mastigophora.
- mastigophoric — Carrying or wielding a whip.
- measuring rod — ruler, gauge, stick for measuring