An overwhelming love affair or infatuation for someone.

delusion of grandeur

plural of grand old man

A male leading light; a man who is the most senior exponent of a particular field.

The official name of the independent country of Luxembourg.

plural of grand duchy

plural of grand vizier

(historical) The greatest minister of a sultan, with absolute power of attorney and, in principle, dismissable only by the sultan himself. / (by extension) A figure of great authority and power.

(idiomatic) With a little common sense and skepticism.

Alternative spelling of great-granddaughter