The state of being actual or real. / A real entity, event or other fact. / The entirety of all that is real. / An individual observer's own subjective perception of that which is real.

When actually done or put into practice.

A female given name

(idiomatic, colloquial) Used to introduce the main crux or issue, or to dispel any preconceived notions or misperceptions.

plural of reality.

(science fiction): The psychic ability to manipulate, control, distort or alter reality / An instance of reality being warped or manipulated by this ability or other kind of phenomenon

The collection and analysis of machine-sensed environmental data pertaining to human social behavior, with the goal of identifying predictable patterns of behavior.

A computer technology that simulates a real or imagined environment so that the user can interact with it as if physically present.

A check or review to make sure something is consistent, reasonable, etc. / (idiomatic) A wake-up call, reminder.

(humorous, euphemistic, of a person) Crazy, bonkers, insane.