15-letter words containing i, n, s, t, y
- family skeleton — a closely guarded family secret
- fauntleroy suit — a formal outfit for a boy composed of a hip-length jacket and knee-length pants, often in black velvet, and a wide, lacy collar and cuffs, usually worn with a broad sash at the waist and sometimes a large, loose bow at the neck, popular in the late 19th century.
- field intensity — the vector sum of all forces exerted by a field on a unit mass, unit charge, unit magnetic pole, etc., at a given point within the field.
- floating supply — the aggregate supply of ready-to-market goods or securities.
- flying buttress — a segmental arch transmitting an outward and downward thrust to a solid buttress that through its inertia transforms the thrust into a vertical one.
- flying fortress — a heavy bomber, the B-17, with four radial piston engines, widely used over Europe and the Mediterranean by the U.S. Air Force in World War II.
- food insecurity — an economic and social condition of limited or uncertain access to adequate food.
- fortysomethings — Plural form of fortysomething.
- fountains abbey — a ruined Cistercian abbey near Ripon in Yorkshire: founded 1132, dissolved 1539; landscaped 1720
- free university — a school run informally by and for college students, organized to offer courses and approaches not usually offered in a college curriculum.
- fungistatically — in a fungistatic manner
- gastronomically — the art or science of good eating.
- growth industry — an industry that is experiencing rapid growth
- guidance system — The guidance system of a missile or rocket is the device which controls its course.
- holocrystalline — (of igneous rocks) having only crystalline components and no glass
- honeymoon suite — a luxurious suite in a hotel designed for honeymooners
- hydrodynamicist — a specialist in hydrodynamics.
- hyperactiveness — The state or quality of being hyperactive.
- hyperextensible — Capable of being stretched and extended.
- hypersalivation — the act or process of salivating.
- hypersensitized — Simple past tense and past participle of hypersensitize.
- hypnotisability — Alternative spelling of hypnotizability.
- hypocrystalline — (of igneous rocks) having both glass and crystalline components
- hyposensitivity — low or diminished sensitivity to stimulation.
- hypostatization — to treat or regard (a concept, idea, etc.) as a distinct substance or reality.
- hypovitaminosis — Insufficiency of one or more essential vitamins in the body.
- identity crisis — a period or episode of psychological distress, often occurring in adolescence but sometimes in adulthood, when a person seeks a clearer sense of self and an acceptable role in society.
- identity papers — law: legal documents
- idiosyncratical — Alternative form of idiosyncratic.
- ignatius loyola — Saint Ignatius of (Iñigo López de Loyola) 1491–1556, Spanish soldier and ecclesiastic: founder of the Society of Jesus.
- ignition system — the system in an internal-combustion engine that produces the spark to ignite the mixture of fuel and air: includes the battery, ignition coil, distributor, spark plugs, and associated switches and wiring.
- immensurability — The quality of being immensurable.
- immunochemistry — the study of the chemistry of immunologic substances and reactions.
- immunohistology — the microscopic study of tissues with the aid of antibodies that bind to tissue components and reveal their presence.
- in its entirety — completely, wholly
- in short supply — If something is in short supply, there is very little of it available and it is difficult to find or obtain.
- in the old days — a long time ago
- in the same way — similarly
- in/into ecstasy — If you are in ecstasy about something, you are very excited about it. If you go into ecstasies, you become very excited.
- inaccessibility — not accessible; unapproachable.
- inadmissibility — not admissible; not allowable: Such evidence would be inadmissible in any court.
- inconsiderately — In an inconsiderate manner.
- inconsolability — not able to be comforted or consoled; disconsolate: She was inconsolable when her son died.
- indefeasibility — The state or quality of being indefeasible, of being incapable of being defeated.
- indefensibility — The quality or state of not being defensible.
- indigestibility — The state of being indigestible.
- indiscretionary — lack of discretion; imprudence.
- indisputability — The property of being indisputable.
- indissolubility — not dissoluble; incapable of being dissolved, decomposed, undone, or destroyed.
- indistinctively — without distinctive characteristics.