Definition of "grounded"

grounded¹

/ˈɡɹaʊn.dɪd/

adjective
comparative more grounded, superlative most grounded
1. (aviation, of an airman or aircraft) Not allowed to fly.
2. (nautical, of a vessel) Aground.
  Quotations
  Courageous went down about an hour ago. Glorious also went down toward the end of the battle, cause unknown. Lion is grounded in the shadows of Terschelling, and will not be recoverable. All of the other battlecruisers have medium to heavy damage of one degree or another, with the exception of Renown, which avoided shell damage but took a torpedo at the last moment and is heading home under tow, and, of course, New Zealand, whose sole casualty is a stoker overcome with heat exhaustion.
  2018 October 17, Drachinifel, 27:01 from the start, in Last Ride of the High Seas Fleet - Battle of Texel 1918‎, archived from the original on 4 August 2022
3. (electricity, Canada, US) Of or pertaining to an electrical conductor which is connected to earth; earthed.
4. (of a person, predicative) Confined to stay inside, typically by a parent, as a punishment.
  Quotations
  "Sam, wait. You're not actually grounded. I just want you to be better about listening when I tell you something."
  2022, Jeph Jacques, Questionable Content (webcomic), 4903: Acquittal
  "When you get home, you'll go straight to your room! You are grounded for 12 years!" —Lewis Hickerson
  2023, The Bigger, the Badder (Terry Knows it All episode)
5. (of a person) Mature; sensible, with well-considered priorities.

grounded²

/ˈɡɹaʊn.dɪd/

verb
1. simple past and past participle of ground