The most common and most likely answer to this crossword clue is the 5 letter word SCOWL
I've seen this crossword clue in Independent
S
C
O
W
L
More clues leading to the result SCOWL
- Hood following sheriff's lead may make one frown
- Look threatening in small hood
- Special hood is not a nice look
- Look angry if X-Factor boss misses train
- Lower monastic hood after start of service
- Boat by lake has a dirty look
- Hood’s after the sheriff’s head — look annoyed!
- Lower small hood
- Lower hood after onset of shower
- Boat stuck beside lake? That’s a bad look
Buddy explains!

The straight part
We know that "Look angry" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case look angry = scowl.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 SCOWL mean?
SCOWL noun- The wrinkling of the brows or face in frowning; the expression of displeasure, sullenness, or discontent in the countenance; an angry frown.
- (by extension) Gloom; dark or threatening aspect.
- To wrinkle the brows, as in frowning or displeasure; to put on a frowning look; to look sour, sullen, severe, or angry.
- (by extension) To look gloomy, dark, or threatening; to lower.
- To look at or repel with a scowl or a frown.
- To express by a scowl.
- Old workings of iron ore.