simple past and past participle of ground

(aviation, of an airman or aircraft) Not allowed to fly.

(nautical, of a vessel) Aground.

(electricity, Canada, US) Of or pertaining to an electrical conductor which is connected to earth; earthed.

(of a person, predicative) Confined to stay inside, typically by a parent, as a punishment.

(of a person) Mature; sensible, with well-considered priorities.