The most common and most likely answer to this crossword clue is the 7 letter word EARTHED
I've seen this crossword clue in The Guardian
E
A
R
T
H
E
D
More clues leading to the result EARTHED
- Hear the district nurses got to ground safely
- Articles separately buried by red revolutionary grounded in the US
- Fear the Daleks surrounded and connected to ground
- Messed around with her date and was grounded
- Consumed by fear, the deer’s gone to ground
- Her date goes and gets grounded
- Broken-hearted, but protected from shock
- Had tree replaced, safe from lightning
- Fox heard ET is grounded
- A three-D representation is grounded
Buddy explains!

The straight part
We know that "grounded" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case grounded = earthed.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does EARTHED mean?
EARTHED verb- To connect electrically to the earth.
- To bury.
- To burrow.
- Grounded, connected electrically to the ground.