The most common and most likely answer to this crossword clue is the 7 letter word SNAPPED
I've seen this crossword clue in The Daily Telegraph
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More clues leading to the result SNAPPED
Buddy explains!

The straight part
We know that "Spoke angrily/broke" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case spoke angrily/broke = snapped.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 SNAPPED mean?
SNAPPED verb- To fracture or break apart suddenly.
- To give forth or produce a sharp cracking noise; to crack.
- To attempt to seize with the teeth or bite.
- To attempt to seize with eagerness.
- To speak abruptly or sharply.
- To give way abruptly and loudly.
- To suffer a mental breakdown, usually while under tension.
- To flash or appear to flash as with light.
- To fit or fasten together with a snapping sound.
- To jump to a fixed position relative to another element.
- To snatch with or as if with the teeth.
- To pull apart with a snapping sound; to pop loose.
- To say abruptly or sharply.
- To speak to abruptly or sharply; to treat snappishly; usually with up.
- To cause something to emit a snapping sound.
- To close something using a snap as a fastener.
- To snap one's fingers: to make a snapping sound, often by pressing the thumb and an opposing finger of the same hand together and suddenly releasing the grip so that the finger hits against the palm; alternatively, by bringing the index finger quickly down onto the middle finger and thumb.
- To cause to move suddenly and smartly.
- To take a photograph; to release a camera's shutter (which may make a snapping sound).
- To put (a football) in play by a backward pass or handoff from its position on the ground; to hike (a football).
- To misfire.
- To catch out sharply (a batsman who has just snicked a bowled ball).