The most common and most likely answer to this crossword clue is the 7 letter word EFFUSED
I've seen this crossword clue in The Daily Telegraph
E
F
F
U
S
E
D
Buddy explains!

The straight part
We know that "Gushed" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case gushed = effused.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 EFFUSED mean?
EFFUSED verb- To emit; to give off
- To gush; to be excitedly talkative and enthusiastic about something
- To pour out like a stream or freely; to cause to exude; to shed.
- To leak out through a small hole