12-letter words containing o, r, v
- heavy bomber — a large plane capable of carrying heavy bomb loads for long distances, especially at high altitudes.
- heliogravure — photoengraving.
- herbivourous — Misspelling of herbivorous.
- heroic verse — a form of verse adapted to the treatment of heroic or exalted themes: in classical poetry, dactylic hexameter; in English and German, iambic pentameter; and in French, the Alexandrine. An example of heroic verse is Achilles' wrath, to Greece the direful spring / Of woes unnumbered, heavenly goddess, sing!
- hoover apron — a dresslike coverall for women that ties at the waist.
- hoovervilles — a collection of huts and shacks, as at the edge of a city, housing the unemployed during the 1930s.
- horned viper — a highly venomous viper, Cerastes cerastes, of northern Africa and extreme southwestern Asia, having a process resembling a horn just above each eye.
- hovering act — an act forbidding or restricting the loitering of foreign or domestic vessels within the prescribed limits of a coastal nation.
- hudson river — Henry, died 1611? English navigator and explorer.
- hybrid vigor — heterosis.
- hypervolemia — (medicine) An abnormal increase in the volume of blood circulating through the body.
- ibota privet — a Japanese spreading shrub, Ligustrum obtusifolium, of the olive family, having hairy leaves and nodding white flower clusters.
- il trovatore — an opera (1853) by Giuseppe Verdi.
- ill-favoured — unpleasant in appearance; homely or ugly.
- imperviously — In an impervious manner; impenetrably; impermeably.
- impoverished — reduced to poverty.
- impoverisher — Someone who impoverishes.
- impoverishes — Third-person singular simple present indicative form of impoverish.
- improvements — Plural form of improvement.
- improvidence — not provident; lacking foresight; incautious; unwary.
- improvisator — a person who improvises; improviser.
- in favour of — If one thing is rejected in favour of another, the second thing is done or chosen instead of the first.
- in overdrive — in a state of intense activity
- inclusive or — the connective that gives the value true to a disjunction if either or both of the disjuncts are true
- inconversant — Not conversant or acquainted (with something); unfamiliar.
- incorruptive — incorruptible; not tending to be corrupted
- innervations — Plural form of innervation.
- inobservable — Unobservable.
- inobservance — lack of attention; inattention; heedlessness: drowsy inobservance.
- insectivores — Plural form of insectivore.
- interconvert — to subject to interconversion; interchange.
- interinvolve — to involve mutually or reciprocally
- intervention — the act or fact of intervening.
- intervillous — Between the villi.
- intervocalic — (usually of a consonant) immediately following a vowel and preceding a vowel, as the v in cover.
- intraveneous — Misspelling of intravenous.
- introductive — serving or used to introduce; preliminary; beginning: an introductory course; an introductory paragraph.
- introversion — the act of introverting or the state of being introverted.
- introversive — the act of introverting or the state of being introverted.
- introverting — a shy person.
- introvertish — Introverted.
- introvertive — the act of introverting or the state of being introverted.
- inventioneer — (rare) inventor.
- inventorying — Present participle of inventory.
- investigator — to examine, study, or inquire into systematically; search or examine into the particulars of; examine in detail.
- inveteration — The act of making inveterate.
- invigilators — Plural form of invigilator.
- invigorating — to give vigor to; fill with life and energy; energize.
- invigoration — to give vigor to; fill with life and energy; energize.
- invigorative — to give vigor to; fill with life and energy; energize.