The most common and most likely answer to this crossword clue is the 9 letter word FURIOUSLY
I've seen this crossword clue in Financial Times
F
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O
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More clues leading to the result FURIOUSLY
Buddy explains!
The straight part
We know that "Angrily" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case angrily = furiously.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 FURIOUSLY mean?
FURIOUSLY adverb- In a furious manner; angrily.
- Quickly; frantically; with great effort or speed.
- Intensely, as with embarrassment.