At an important, elevated, or exalted level in a hierarchy or organization; high-level.

plural of knee-high

(usually in the plural) The setting of an automobile's headlights adjusted to brighten a longer distance in front of the car, than when on the normal (low-beam) setting.

(religion) One of the titles of God. Supreme, most magnificent. / The 87th sura (chapter) of the Qur'an.

(UK, Australia, New Zealand) A late afternoon or early evening meal, typically consisting of a cooked dish with bread and butter and tea. / (US) Formal afternoon tea.

Alternative form of highchair

(idiomatic, US) Well off; living comfortably or extravagantly due to great wealth or financial security.

Alternative spelling of hightail it.

(physics) of an elementary particle, or the equivalent electromagnetic radiation, having an energy greater than a hundred thousand electron volts

(idiomatic) Resentfully or furiously.