Gerald, perhaps, looked fierce (6)

I believe the answer is:

glared

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'looked fierce' is the definition.
I can't judge whether this definition defines the answer.

'gerald perhaps' is the wordplay.
'perhaps' is an anagram indicator.
'gerald' is an anagram of 'GLARED'.

Can you help me to learn more?

(Other definitions for glared that I've seen before include "Looked angrily" , "Lowered" , "Stared fiercely" , "Glowered" , "Was too bright" .)

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