The most common and most likely answer to this crossword clue is the 7 letter word RENEGED
R
E
N
E
G
E
D
More clues leading to the result RENEGED
- Flipping degenerate dined out and went back on his word
- Grass holding info turned up and welshed
- Was a rat left with hereditary element held back?
- Frenchman adopting say, daughter, went back
- TV's Ellen, upset after last two bits edited out, broke contract
- Went back with sample from echidna amid confusion of gender
- Not all there, retiring talk-show host Ellen backed out
Buddy explains!

The straight part
We know that "Was a rat" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case was a rat = reneged.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 RENEGED mean?
RENEGED verb- To break a promise or commitment; to go back on one's word.
- In a card game, to break one's commitment to follow suit when capable.
- To deny; to renounce