The most common and most likely answer to this crossword clue is the 7 letter word GROWLED
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More clues leading to the result GROWLED
Buddy explains!

The straight part
We know that "Spoke angrily" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case spoke angrily = growled.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 GROWLED mean?
GROWLED verb- To utter a deep guttural sound, as an angry animal; to give forth an angry, grumbling sound.
- Of a wind instrument: to produce a low-pitched rumbling sound.
- To send a user a message via the Growl software library.
- To express (something) by growling.
- To play a wind instrument in a way that produces a low-pitched rumbling sound.